129375884 has 24 divisors (see below), whose sum is σ = 249544848. Its totient is φ = 58199040.

The previous prime is 129375881. The next prime is 129375889. The reversal of 129375884 is 488573921.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 10889 + ... + 19424.

It is an arithmetic number, because the mean of its divisors is an integer number (10397702).

Almost surely, 2^129375884 is an apocalyptic number.

It is an amenable number.

129375884 is a deficient number, since it is larger than the sum of its proper divisors (120168964).

129375884 is a wasteful number, since it uses less digits than its factorization.

129375884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30425 (or 30423 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 129375884 is about 11374.3520255002. The cubic root of 129375884 is about 505.7677229145.

It can be divided in two parts, 1293 and 75884, that added together give a palindrome (77177).

The spelling of 129375884 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, eight hundred eighty-four".