52:4 The Restaurant at the End of the Universe by Douglas adams.

Wow, second book's done already. When did I finish the first? Anyways, a lot of stuff happenes, and the main characters seem to find the ultimate question, what do you get when you multiply six by nine, which in base 13 equals 42, the answer to life, the universe, and everything! I doubt that's the truth, but who knows? Only those who read the books, that's who!