128975124 has 24 divisors (see below), whose sum is σ = 318644928. Its totient is φ = 40462720.

The previous prime is 128975123. The next prime is 128975137. The reversal of 128975124 is 421579821.

It is a super-2 number, since 2×128975124² = 33269165221630752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128975123) 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, 315912 + ... + 316319.

It is an arithmetic number, because the mean of its divisors is an integer number (13276872).

Almost surely, 2^128975124 is an apocalyptic number.

It is an amenable number.

128975124 is an abundant number, since it is smaller than the sum of its proper divisors (189669804).

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

128975124 is a wasteful number, since it uses less digits than its factorization.

128975124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632255 (or 632253 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 128975124 is about 11356.7215339639. The cubic root of 128975124 is about 505.2449538694.

The spelling of 128975124 in words is "one hundred twenty-eight million, nine hundred seventy-five thousand, one hundred twenty-four".