Names of 420
| Nominal | 420 |
| Cardinal | four hundred twenty |
| Ordinal | 420th |
| This number as US currency | four hundred twenty dollars |
| Is 420 an odd number? | 420 is NOT an odd number |
| Is 420 an even number? | 420 is an even number |
| Is 420 a palindrome? | 420 is NOT a palindrome number |
| Is 420 a triangle number? | 420 is NOT a triangle number |
420 in other Bases
| Base 2 (Binary) | 1101001002 |
| Base 3 (Ternary) | 1201203 |
| Base 4 (Quaternary) | 122104 |
| Base 5 (Quinary) | 31405 |
| Base 6 (Senary) | 15406 |
| Base 8 (Octal) | 6448 |
| Base 12 (Duodecimal) | 2B012 |
| Base 16 (Hexadecimal) | 1A416 |
| Base 20 (Vigesimal) | 11020 |
Primes and Factors tests for 420
| Is 420 a Prime Number? | 420 is NOT a prime |
| Is 420 a perfect number? | 420 is NOT a perfect number |
| Is 420 a Mersenne Prime? | 420 is NOT a Mersenne prime |
| Is 420 a Fermat Prime? | 420 is NOT a Fermat prime |
| Is 420 a Fibonacci Prime? | 420 is NOT a Fibonacci prime |
| Is 420 a Partition Prime? | 420 is NOT a Partition prime |
| Is 420 a Pell Prime? | 420 is NOT a Pell prime |
| Prime Factors | Prime factors of 420 |
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420 in other Numerals
| 420 in Roman Numeral | CDXX |
| 420 in Chinese Numeral | 肆佰貳拾 |
| 420 in Egyptian Numeral | 𓍥𓎇 |
| 420 in Babylonian Numeral |  |
Roots and stuff for 420
| Is 420 a square number? | 420 is NOT a square number |
| Is 420 a cube number? | 420 is NOT a cube number |
| Square root of the number 420 | 20.493901531919 |
| Cube root of the number 420 | 7.4888723872185 |
Recreational math for 420
| Number 420 reversed | 024 |
| Sum of the digits | 6 |
| No of digits | 3 |