129685113 has 6 divisors (see below), whose sum is σ = 187322954. Its totient is φ = 86456736.

The previous prime is 129685103. The next prime is 129685139. The reversal of 129685113 is 311586921.

It can be written as a sum of positive squares in only one way, i.e., 109998144 + 19686969 = 10488^2 + 4437^2 .

It is not a de Polignac number, because 129685113 - 2⁴ = 129685097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129685103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7204720 + ... + 7204737.

Almost surely, 2^129685113 is an apocalyptic number.

It is an amenable number.

129685113 is a deficient number, since it is larger than the sum of its proper divisors (57637841).

129685113 is a wasteful number, since it uses less digits than its factorization.

129685113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14409463 (or 14409460 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 129685113 is about 11387.9371705327. The cubic root of 129685113 is about 506.1703574760.

It can be divided in two parts, 12968 and 5113, that added together give a palindrome (18081).

The spelling of 129685113 in words is "one hundred twenty-nine million, six hundred eighty-five thousand, one hundred thirteen".