129013653 has 4 divisors (see below), whose sum is σ = 172018208. Its totient is φ = 86009100.

The previous prime is 129013639. The next prime is 129013727. The reversal of 129013653 is 356310921.

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: 356310921 = 3 ⋅118770307.

It is not a de Polignac number, because 129013653 - 2⁸ = 129013397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129013653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129013853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21502273 + ... + 21502278.

It is an arithmetic number, because the mean of its divisors is an integer number (43004552).

Almost surely, 2^129013653 is an apocalyptic number.

It is an amenable number.

129013653 is a deficient number, since it is larger than the sum of its proper divisors (43004555).

129013653 is an equidigital number, since it uses as much as digits as its factorization.

129013653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43004554.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 129013653 is about 11358.4177155095. The cubic root of 129013653 is about 505.2952598099.

The spelling of 129013653 in words is "one hundred twenty-nine million, thirteen thousand, six hundred fifty-three".