129873875 has 16 divisors (see below), whose sum is σ = 162549504. Its totient is φ = 103600000.

The previous prime is 129873857. The next prime is 129873923. The reversal of 129873875 is 578378921.

It is not a de Polignac number, because 129873875 - 2¹⁴ = 129857491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48830 + ... + 51420.

It is an arithmetic number, because the mean of its divisors is an integer number (10159344).

Almost surely, 2^129873875 is an apocalyptic number.

129873875 is a deficient number, since it is larger than the sum of its proper divisors (32675629).

129873875 is an equidigital number, since it uses as much as digits as its factorization.

129873875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 2997 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 129873875 is about 11396.2219616854. The cubic root of 129873875 is about 506.4158223237.

The spelling of 129873875 in words is "one hundred twenty-nine million, eight hundred seventy-three thousand, eight hundred seventy-five".