42

42.

What more do you need to know?

42, is the answer, and the question isn't, "What's 6 times 7?" or "What was James Worthy's number while playing for the Lakers (had to have been odd to be one of the 50 all time best players in the NBA, and only 3rd best player on your own team)?"

Rather it's all about the collision of pure math and physics.

(article found via /., a typically slashdotty discussion ensues, first comment from Anonymous Coward, " I just hope I lose my virginity by the time I'm 42

...")

And just in case anyone doesn't know the significance of 42, Wiki is a good source for enlightenment.