42 is a Catalan number.
42 lies between a twin prime pair: 41, 43.
42 is the number of spots on a pair of dice.
42 is 101010 in base 2 (binary).
42 has a unique representation as a sum of three squares: 42 = 12 + 42 + 52.
Douglas Adams used 42 as "the answer to the ultimate question of life, the universe, and everything" in his Hitchhiker's Guide to the Galaxy series.
Source: Number Gossip
Douglas Adams used 42 as "the answer to the ultimate question of life, the universe, and everything" in his Hitchhiker's Guide to the Galaxy series.
Source: Number Gossip
