129155375 has 16 divisors (see below), whose sum is σ = 170670240. Its totient is φ = 97244800.

The previous prime is 129155363. The next prime is 129155401. The reversal of 129155375 is 573551921.

It is not a de Polignac number, because 129155375 - 2¹⁰ = 129154351 is a prime.

It is a super-2 number, since 2×129155375² = 33362221782781250, which contains 22 as substring.

It is a congruent 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, 28265 + ... + 32514.

It is an arithmetic number, because the mean of its divisors is an integer number (10666890).

Almost surely, 2^129155375 is an apocalyptic number.

129155375 is a deficient number, since it is larger than the sum of its proper divisors (41514865).

129155375 is an equidigital number, since it uses as much as digits as its factorization.

129155375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60811 (or 60801 counting only the distinct ones).

The product of its digits is 47250, while the sum is 38.

The square root of 129155375 is about 11364.6546361955. The cubic root of 129155375 is about 505.4802150383.

The spelling of 129155375 in words is "one hundred twenty-nine million, one hundred fifty-five thousand, three hundred seventy-five".