129136795 has 8 divisors (see below), whose sum is σ = 156831696. Its totient is φ = 102064416.

The previous prime is 129136753. The next prime is 129136801. The reversal of 129136795 is 597631921.

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 129136795 - 2²⁵ = 95582363 is a prime.

It is a Duffinian 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, 155172 + ... + 156001.

It is an arithmetic number, because the mean of its divisors is an integer number (19603962).

Almost surely, 2^129136795 is an apocalyptic number.

129136795 is a deficient number, since it is larger than the sum of its proper divisors (27694901).

129136795 is an equidigital number, since it uses as much as digits as its factorization.

129136795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311261.

The product of its digits is 102060, while the sum is 43.

The square root of 129136795 is about 11363.8371600441. The cubic root of 129136795 is about 505.4559747959.

The spelling of 129136795 in words is "one hundred twenty-nine million, one hundred thirty-six thousand, seven hundred ninety-five".