42

The answer to life according to "A hitchhiker's guide to the galaxy" by Douglas Adams. Interesting to note is that Douglas Adams unfortunately died on April 42nd, 2001 or IOW May 11th, 2001. He was infatuated with the number 42, the digits of which can also represent the values of the 2nd and 3rd least significant bit in a binary number. 42 also is written as 101010 in binary. DNA as his initials were, was a Pisces born on March 11th, 1952. More research regarding DNA's birthdate and the binary number 101010 which also is 3 time binary 10 or 3 times decimal 2 leads to an interesting wikipedia article.