129875 has 8 divisors (see below), whose sum is σ = 162240. Its totient is φ = 103800.

The previous prime is 129853. The next prime is 129887. The reversal of 129875 is 578921.

It is a de Polignac number, because none of the positive numbers 2^k-129875 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395 + ... + 644.

It is an arithmetic number, because the mean of its divisors is an integer number (20280).

2¹²⁹⁸⁷⁵ is an apocalyptic number.

129875 is a deficient number, since it is larger than the sum of its proper divisors (32365).

129875 is an equidigital number, since it uses as much as digits as its factorization.

129875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1044 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 129875 is about 360.3817420458. The cubic root of 129875 is about 50.6417284553.

The spelling of 129875 in words is "one hundred twenty-nine thousand, eight hundred seventy-five".