According to The Hitchhiker's Guide to the Galaxy book, the answer to life, the universe and everything else is...

In Douglas Adams' "The Hitchhiker's Guide to the Galaxy," the answer to the ultimate question of life, the universe, and everything else is humorously revealed to be the number 42. However, the reason for this seemingly arbitrary and enigmatic choice is never explicitly explained. Adams intended it as a satire on the ultimate search for meaning and significance, poking fun at humanity's tendency to seek profound answers where there may be none. The number 42 serves as a reminder that sometimes the search for answers may be futile, and understanding the question is often more important than the answer itself.