Names of 21420
| Nominal | 21420 |
| Cardinal | twenty-one thousand four hundred twenty |
| Ordinal | 21,420th |
| This number as US currency | twenty-one thousand four hundred twenty dollars |
| Is 21420 an odd number? | 21420 is NOT an odd number |
| Is 21420 an even number? | 21420 is an even number |
| Is 21420 a palindrome? | 21420 is NOT a palindrome number |
| Is 21420 a triangle number? | 21420 is NOT a triangle number |
21420 in other Bases
| Base 2 (Binary) | 1010011101011002 |
| Base 3 (Ternary) | 10021011003 |
| Base 4 (Quaternary) | 110322304 |
| Base 5 (Quinary) | 11411405 |
| Base 6 (Senary) | 2431006 |
| Base 8 (Octal) | 516548 |
| Base 12 (Duodecimal) | 1049012 |
| Base 16 (Hexadecimal) | 53AC16 |
| Base 20 (Vigesimal) | 2DB020 |
Primes and Factors tests for 21420
| Is 21420 a Prime Number? | 21420 is NOT a prime |
| Is 21420 a perfect number? | 21420 is NOT a perfect number |
| Is 21420 a Mersenne Prime? | 21420 is NOT a Mersenne prime |
| Is 21420 a Fermat Prime? | 21420 is NOT a Fermat prime |
| Is 21420 a Fibonacci Prime? | 21420 is NOT a Fibonacci prime |
| Is 21420 a Partition Prime? | 21420 is NOT a Partition prime |
| Is 21420 a Pell Prime? | 21420 is NOT a Pell prime |
| Prime Factors | Prime factors of 21420 |
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21420 in other Numerals
| 21420 in Roman Numeral | XXMCDXX |
| 21420 in Chinese Numeral | 貳萬壹仟肆佰貳拾 |
| 21420 in Egyptian Numeral | 𓂮𓆼𓍥𓎇 |
| 21420 in Babylonian Numeral |   |
Roots and stuff for 21420
| Is 21420 a square number? | 21420 is NOT a square number |
| Is 21420 a cube number? | 21420 is NOT a cube number |
| Square root of the number 21420 | 146.35573101181 |
| Cube root of the number 21420 | 27.771957298997 |
Recreational math for 21420
| Number 21420 reversed | 02412 |
| Sum of the digits | 9 |
| No of digits | 5 |