129072897274 has 16 divisors (see below), whose sum is σ = 195147006120. Its totient is φ = 64025902080.

The previous prime is 129072897253. The next prime is 129072897311. The reversal of 129072897274 is 472798270921.

It can be written as a sum of positive squares in 4 ways, for example, as 126882002025 + 2190895249 = 356205^2 + 46807^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372759 + ... + 630154.

Almost surely, 2^129072897274 is an apocalyptic number.

129072897274 is a deficient number, since it is larger than the sum of its proper divisors (66074108846).

129072897274 is a wasteful number, since it uses less digits than its factorization.

129072897274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003425.

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 129072897274 in words is "one hundred twenty-nine billion, seventy-two million, eight hundred ninety-seven thousand, two hundred seventy-four".