129535013 has 4 divisors (see below), whose sum is σ = 129596640. Its totient is φ = 129473388.

The previous prime is 129534997. The next prime is 129535037. The reversal of 129535013 is 310535921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310535921 = 13931 ⋅22291.

It is a cyclic number.

It is not a de Polignac number, because 129535013 - 2⁴ = 129534997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129535213) 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 3 ways as a sum of consecutive naturals, for example, 27545 + ... + 31902.

It is an arithmetic number, because the mean of its divisors is an integer number (32399160).

Almost surely, 2^129535013 is an apocalyptic number.

It is an amenable number.

129535013 is a deficient number, since it is larger than the sum of its proper divisors (61627).

129535013 is an equidigital number, since it uses as much as digits as its factorization.

129535013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61626.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 129535013 is about 11381.3449556720. The cubic root of 129535013 is about 505.9749983741.

The spelling of 129535013 in words is "one hundred twenty-nine million, five hundred thirty-five thousand, thirteen".