129345875 has 8 divisors (see below), whose sum is σ = 161423808. Its totient is φ = 103476600.

The previous prime is 129345871. The next prime is 129345893. The reversal of 129345875 is 578543921.

It is not a de Polignac number, because 129345875 - 2² = 129345871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129345871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517259 + ... + 517508.

It is an arithmetic number, because the mean of its divisors is an integer number (20177976).

Almost surely, 2^129345875 is an apocalyptic number.

129345875 is a deficient number, since it is larger than the sum of its proper divisors (32077933).

129345875 is an equidigital number, since it uses as much as digits as its factorization.

129345875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034782 (or 1034772 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 129345875 is about 11373.0327969280. The cubic root of 129345875 is about 505.7286152726.

The spelling of 129345875 in words is "one hundred twenty-nine million, three hundred forty-five thousand, eight hundred seventy-five".