42 is an even integer with [prime](prime.md) factorization of 2 * 3 * 7. This [number](number.md) was made kind of famous (and later overused in pop culture to the point of completely destroying the [joke](jokes.md)) by Douglas Adams' book The Hitchhiker's Guide to the Galaxy wherein it represents the answer to the ultimate question of [life](life.md), the [Universe](universe.md) and everything (the point of the joke was that the number was the ultimate answer computed by a colossal supercomputer over millions of years, but it was ultimately useless for the simple fact that no one knew the question which it answered).
