420 (number)
Natural number
From Wikipedia, the free encyclopedia
420 (four hundred [and] twenty) is the natural number following 419 and preceding 421.
| ||||
|---|---|---|---|---|
| Cardinal | four hundred twenty | |||
| Ordinal | 420th (four hundred twentieth) | |||
| Factorization | 22 × 3 × 5 × 7 | |||
| Greek numeral | ΥΚ´ | |||
| Roman numeral | CDXX, cdxx | |||
| Binary | 1101001002 | |||
| Ternary | 1201203 | |||
| Senary | 15406 | |||
| Octal | 6448 | |||
| Duodecimal | 2B012 | |||
| Hexadecimal | 1A416 | |||
In mathematics
420 is a zero of the Mertens function,[1] a sparsely totient number,[2] a pronic number,[3] a balanced number,[4] and a largely composite number.[5]