129971195 has 16 divisors (see below), whose sum is σ = 162226560. Its totient is φ = 99874944.

The previous prime is 129971167. The next prime is 129971207. The reversal of 129971195 is 591179921.

It is a cyclic number.

It is not a de Polignac number, because 129971195 - 2¹⁸ = 129709051 is a prime.

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, 10169 + ... + 19061.

It is an arithmetic number, because the mean of its divisors is an integer number (10139160).

Almost surely, 2^129971195 is an apocalyptic number.

129971195 is a deficient number, since it is larger than the sum of its proper divisors (32255365).

129971195 is an equidigital number, since it uses as much as digits as its factorization.

129971195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9014.

The product of its digits is 51030, while the sum is 44.

The square root of 129971195 is about 11400.4909981983. The cubic root of 129971195 is about 506.5422836891.

The spelling of 129971195 in words is "one hundred twenty-nine million, nine hundred seventy-one thousand, one hundred ninety-five".