| ||||
---|---|---|---|---|
Cardinal | forty-two | |||
Ordinal | 42nd (forty-second) | |||
Factorization | 2 × 3 × 7 | |||
Greek numeral | ΜΒ´ | |||
Roman numeral | XLII | |||
Binary | 1010102 | |||
Ternary | 11203 | |||
Quaternary | 2224 | |||
Quinary | 1325 | |||
Senary | 1106 | |||
Octal | 528 | |||
Duodecimal | 3612 | |||
Hexadecimal | 2A16 | |||
Vigesimal | 2220 | |||
Base 36 | 1636 |
Forty-two is a number. It comes between forty-one and forty-three, and is an even number. It is divisible by 1, 2, 3, 6, 7, 14, 21, and 42.
42 is an extremely interesting number to mathematicians, because of its many features. For example:
There are at least a dozen more features of interest to number theory enthusiasts.
"42" is the "Answer to the Ultimate Question of Life, the Universe, and Everything" in Douglas Adams' The Hitchhiker's Guide to the Galaxy books.
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.