42 is an extremely interesting number to mathematicians, because of its many features. For example:
- It is the product of two consecutive integers (6 and 7), making it a pronic number.
- It is the second sphenic number, the product of three distinct prime numbers.
- It is an abundant number, the sum of its proper divisors is greater than the number itself.
There are at least a dozen more features of interest to number theory enthusiasts.
Appearance in literature
The number makes regular appearances in Lewis Carroll's writings, such as in The Hunting of the Snark. Rule Forty-two in Alice's Adventures in Wonderland is "All persons more than a mile high to leave the court". Charles Dodgson was a mathematician.
42 (number) Facts for Kids. Kiddle Encyclopedia.