129967875 has 64 divisors (see below), whose sum is σ = 243384960. Its totient is φ = 68428800.

The previous prime is 129967861. The next prime is 129967883. The reversal of 129967875 is 578769921.

It is not a de Polignac number, because 129967875 - 2⁶ = 129967811 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327177 + ... + 327573.

It is an arithmetic number, because the mean of its divisors is an integer number (3802890).

Almost surely, 2^129967875 is an apocalyptic number.

129967875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

129967875 is a deficient number, since it is larger than the sum of its proper divisors (113417085).

129967875 is an equidigital number, since it uses as much as digits as its factorization.

129967875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 502 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 54.

The square root of 129967875 is about 11400.3453895047. The cubic root of 129967875 is about 506.5379705931.

The spelling of 129967875 in words is "one hundred twenty-nine million, nine hundred sixty-seven thousand, eight hundred seventy-five".