13129975 has 6 divisors (see below), whose sum is σ = 16281200. Its totient is φ = 10503960.

The previous prime is 13129951. The next prime is 13129979. The reversal of 13129975 is 57992131.

13129975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13129975 - 2⁹ = 13129463 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129979) 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 5 ways as a sum of consecutive naturals, for example, 262575 + ... + 262624.

Almost surely, 2^13129975 is an apocalyptic number.

13129975 is a deficient number, since it is larger than the sum of its proper divisors (3151225).

13129975 is an equidigital number, since it uses as much as digits as its factorization.

13129975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525209 (or 525204 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 13129975 is about 3623.5307367263. The cubic root of 13129975 is about 235.9144990954.

The spelling of 13129975 in words is "thirteen million, one hundred twenty-nine thousand, nine hundred seventy-five".