Base | Representation |
---|---|
bin | 11101111100011111001 |
3 | 1211212000021 |
4 | 3233203321 |
5 | 222344431 |
6 | 33010441 |
7 | 11224522 |
oct | 3574371 |
9 | 1755007 |
10 | 981241 |
11 | 610248 |
12 | 3b3a21 |
13 | 284821 |
14 | 1b7849 |
15 | 145b11 |
hex | ef8f9 |
981241 has 2 divisors, whose sum is σ = 981242. Its totient is φ = 981240.
The previous prime is 981221. The next prime is 981263. The reversal of 981241 is 142189.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 817216 + 164025 = 904^2 + 405^2 .
It is an emirp because it is prime and its reverse (142189) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 981241 - 25 = 981209 is a prime.
981241 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (981221) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490620 + 490621.
It is an arithmetic number, because the mean of its divisors is an integer number (490621).
2981241 is an apocalyptic number.
It is an amenable number.
981241 is a deficient number, since it is larger than the sum of its proper divisors (1).
981241 is an equidigital number, since it uses as much as digits as its factorization.
981241 is an evil number, because the sum of its binary digits is even.
The product of its digits is 576, while the sum is 25.
The square root of 981241 is about 990.5760950073. The cubic root of 981241 is about 99.3707487337.
The spelling of 981241 in words is "nine hundred eighty-one thousand, two hundred forty-one".
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