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129157883 is a prime number
BaseRepresentation
bin1111011001011…
…00101011111011
3100000000220022022
413230230223323
5231031023013
620452145055
73125552411
oct754545373
9300026268
10129157883
11669a7258
123730818b
13209b23aa
14132212b1
15b514008
hex7b2cafb

129157883 has 2 divisors, whose sum is σ = 129157884. Its totient is φ = 129157882.

The previous prime is 129157867. The next prime is 129157921. The reversal of 129157883 is 388751921.

It is a weak prime.

It is an emirp because it is prime and its reverse (388751921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129157883 - 24 = 129157867 is a prime.

It is not a weakly prime, because it can be changed into another prime (129157283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64578941 + 64578942.

It is an arithmetic number, because the mean of its divisors is an integer number (64578942).

Almost surely, 2129157883 is an apocalyptic number.

129157883 is a deficient number, since it is larger than the sum of its proper divisors (1).

129157883 is an equidigital number, since it uses as much as digits as its factorization.

129157883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 44.

The square root of 129157883 is about 11364.7649777723. The cubic root of 129157883 is about 505.4834869016.

The spelling of 129157883 in words is "one hundred twenty-nine million, one hundred fifty-seven thousand, eight hundred eighty-three".