129375127 has 8 divisors (see below), whose sum is σ = 147946400. Its totient is φ = 110826144.

The previous prime is 129375101. The next prime is 129375137. The reversal of 129375127 is 721573921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129375127 - 2²³ = 120986519 is a prime.

It is a super-2 number, since 2×129375127² = 33475846972532258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129375137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9649 + ... + 18757.

It is an arithmetic number, because the mean of its divisors is an integer number (18493300).

Almost surely, 2^129375127 is an apocalyptic number.

129375127 is a deficient number, since it is larger than the sum of its proper divisors (18571273).

129375127 is an equidigital number, since it uses as much as digits as its factorization.

129375127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11145.

The product of its digits is 26460, while the sum is 37.

The square root of 129375127 is about 11374.3187488306. The cubic root of 129375127 is about 505.7667364687.

The spelling of 129375127 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, one hundred twenty-seven".