Names of 1281
| Nominal | 1281 |
| Cardinal | one thousand two hundred eighty-one |
| Ordinal | 1,281st |
| This number as US currency | one thousand two hundred eighty-one dollars |
| Is 1281 an odd number? | 1281 is an odd number |
| Is 1281 an even number? | 1281 is NOT an even number |
| Is 1281 a palindrome? | 1281 is NOT a palindrome number |
| Is 1281 a triangle number? | 1281 is NOT a triangle number |
1281 in other Bases
| Base 2 (Binary) | 101000000012 |
| Base 3 (Ternary) | 12021103 |
| Base 4 (Quaternary) | 1100014 |
| Base 5 (Quinary) | 201115 |
| Base 6 (Senary) | 55336 |
| Base 8 (Octal) | 24018 |
| Base 12 (Duodecimal) | 8A912 |
| Base 16 (Hexadecimal) | 50116 |
| Base 20 (Vigesimal) | 34120 |
Primes and Factors tests for 1281
| Is 1281 a Prime Number? | 1281 is NOT a prime |
| Is 1281 a perfect number? | 1281 is NOT a perfect number |
| Is 1281 a Mersenne Prime? | 1281 is NOT a Mersenne prime |
| Is 1281 a Fermat Prime? | 1281 is NOT a Fermat prime |
| Is 1281 a Fibonacci Prime? | 1281 is NOT a Fibonacci prime |
| Is 1281 a Partition Prime? | 1281 is NOT a Partition prime |
| Is 1281 a Pell Prime? | 1281 is NOT a Pell prime |
| Prime Factors | Prime factors of 1281 |
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1281 in other Numerals
| 1281 in Roman Numeral | MCCLXXXI |
| 1281 in Chinese Numeral | 壹仟貳佰捌拾壹 |
| 1281 in Egyptian Numeral | 𓆼𓍣𓎍𓏺 |
| 1281 in Babylonian Numeral |  |
Roots and stuff for 1281
| Is 1281 a square number? | 1281 is NOT a square number |
| Is 1281 a cube number? | 1281 is NOT a cube number |
| Square root of the number 1281 | 35.791060336347 |
| Cube root of the number 1281 | 10.860497248717 |
Recreational math for 1281
| Number 1281 reversed | 1821 |
| Sum of the digits | 12 |
| No of digits | 4 |