| Decimal | 420 |
| Binary | 110100100 |
| Hexadecimal | 0x1a4 |
| Roman | CDXX |
| Dotted decimal | 0.0.1.164 |
| Square root of | 176400 |
| Factors | 7 5 3 2 2 |
| English | four hundred twenty |
| Wikipedia Article about 420 | Wikipedia Article about 420 |
| RGB Color | #0001a4, |
| random from 1 to 6 | Show |
| random from 1 to 10 | Show |
| random from 1 to 100 | Show |
| random from 1 to 1000 | Show |