129457597 has 2 divisors, whose sum is σ = 129457598. Its totient is φ = 129457596.

The previous prime is 129457591. The next prime is 129457609. The reversal of 129457597 is 795754921.

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., 99580441 + 29877156 = 9979^2 + 5466^2 .

It is a cyclic number.

It is not a de Polignac number, because 129457597 - 2¹¹ = 129455549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129457597.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129457591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64728798 + 64728799.

It is an arithmetic number, because the mean of its divisors is an integer number (64728799).

Almost surely, 2^129457597 is an apocalyptic number.

It is an amenable number.

129457597 is a deficient number, since it is larger than the sum of its proper divisors (1).

129457597 is an equidigital number, since it uses as much as digits as its factorization.

129457597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 49.

The square root of 129457597 is about 11377.9434433469. The cubic root of 129457597 is about 505.8741804163.

The spelling of 129457597 in words is "one hundred twenty-nine million, four hundred fifty-seven thousand, five hundred ninety-seven".