It was revealed in Mecca, it is thirty passages long, consisting of three hundred and thirty words and one thousand three hundred letters. (Tafsir Al-Khateeb Al-Sharabini Vol .3 P.367.)

Ibn Shihab said that is it known as 'the disputer' as it disputes with those of the grave! (Ibid) Those of the grave meaning the two angels Munkar and Nakir who question the servant after they are buried and their relatives have gone.

All of the Quran is blessed and parts of the Quran we have been informed about their specific blessing and others we have not. One such Surah that we have been informed about its blessing is Surah Mulk.

Notice that death comes first as this is much harder to deal with its consequences than life. When death comes it takes us out of our comfort zones as it scares us into considering our mortality. Life can be a trail for parents who do not wish to have children. They worry about provision and other unnecessary concerns.

When you ponder these meanings then you begin to think about the ephemeral nature of life and then you begin to contemplate the afterlife.

There are many hadith explaining its qualities and its benefits we shall go through some.

Ibn Abbas (may Allah be pleased with him) narrated that the Messenger of Allah (may Allah bestow peace and blessings upon him) said, “I wish that “Blessed is the Dominion” would be in the heart of every believer.” (Al-Hakim in Al-Mustadrak 1/253 and Qurtabi in his commentary 17/205.)

This does not just mean that we memorize it verbatim but are heedless of its meanings. Learn the meanings as well, then when you recite it you go over the meanings thus increasing your attendance in the prayer.

Abdullah Ibn Mas’ud (may Allah be pleased with him) said, “When the deceased are placed in their grave; it comes in front of his legs and says, “There is no way for you here as he used to perform the Surah Al-Mulk.” Then it would stand before his head and say to his tongue, “There is no way for you because he used to recite Surah Al-Mulk.” Then he said, “It is protector from the punishment of Allah. It is in the Torah that whoever recites the Surah Al-Mulk has increased and become more fragrant.” (Al-Qurtabi 18/205.)

Hadith (hadees):
The first and foremost exegesis/tafsir (tafseer) of the Quran is found in hadis of Hazrat Muhammad (SAW) and while hades is literally "speech"; recorded saying or tradition of Hazrat Muhammad (SAW) validated by isnad; with seerah these comprise the sunnah (sunnat) and reveal shariah and tafsir. Although scholars including ibn Taymiyyah claim that Hazrat Muhammad (SAW) has commented on the whole of the Qur'an (Koran or Quraan), others including Ghazali cite the limited amount of narratives, thus indicating that he has commented only on a portion of the AlQuran (AlQur'an). In either the case, higher count of hadith elevates the importance of the pertinent surah from a certain perspective. This surah holds special place in the sayings as well as practices of Muhammad, which can be observed by these related ahadith (Ahadees / Ahadis).