129375882 has 24 divisors (see below), whose sum is σ = 296804196. Its totient is φ = 40588416.

The previous prime is 129375881. The next prime is 129375889. The reversal of 129375882 is 288573921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128799801 + 576081 = 11349^2 + 759^2 .

It is not an unprimeable number, because it can be changed into a prime (129375881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211093 + ... + 211704.

Almost surely, 2^129375882 is an apocalyptic number.

129375882 is an abundant number, since it is smaller than the sum of its proper divisors (167428314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129375882 is a wasteful number, since it uses less digits than its factorization.

129375882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422822 (or 422819 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 129375882 is about 11374.3519375831. The cubic root of 129375882 is about 505.7677203083.

The spelling of 129375882 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, eight hundred eighty-two".