129872875 has 32 divisors (see below), whose sum is σ = 182969280. Its totient is φ = 91168000.

The previous prime is 129872863. The next prime is 129872879. The reversal of 129872875 is 578278921.

It is not a de Polignac number, because 129872875 - 2¹⁹ = 129348587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129872879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38247 + ... + 41503.

It is an arithmetic number, because the mean of its divisors is an integer number (5717790).

Almost surely, 2^129872875 is an apocalyptic number.

129872875 is a deficient number, since it is larger than the sum of its proper divisors (53096405).

129872875 is a wasteful number, since it uses less digits than its factorization.

129872875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3302 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The square root of 129872875 is about 11396.1780874116. The cubic root of 129872875 is about 506.4145225573.

The spelling of 129872875 in words is "one hundred twenty-nine million, eight hundred seventy-two thousand, eight hundred seventy-five".