129013029 has 12 divisors (see below), whose sum is σ = 190686496. Its totient is φ = 84008232.

The previous prime is 129013013. The next prime is 129013039. The reversal of 129013029 is 920310921.

It is not a de Polignac number, because 129013029 - 2⁴ = 129013013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129012993 and 129013011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129013039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166297 + ... + 167070.

Almost surely, 2^129013029 is an apocalyptic number.

It is an amenable number.

129013029 is a deficient number, since it is larger than the sum of its proper divisors (61673467).

129013029 is a wasteful number, since it uses less digits than its factorization.

129013029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333416 (or 333413 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 129013029 is about 11358.3902468616. The cubic root of 129013029 is about 505.2944451552.

The spelling of 129013029 in words is "one hundred twenty-nine million, thirteen thousand, twenty-nine".