128129574 has 16 divisors (see below), whose sum is σ = 256415040. Its totient is φ = 42683880.

The previous prime is 128129513. The next prime is 128129579. The reversal of 128129574 is 475921821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128129579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6057 + ... + 17115.

It is an arithmetic number, because the mean of its divisors is an integer number (16025940).

Almost surely, 2^128129574 is an apocalyptic number.

128129574 is an abundant number, since it is smaller than the sum of its proper divisors (128285466).

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

128129574 is a wasteful number, since it uses less digits than its factorization.

128129574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12995.

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

The square root of 128129574 is about 11319.4334663887. The cubic root of 128129574 is about 504.1384178270.

The spelling of 128129574 in words is "one hundred twenty-eight million, one hundred twenty-nine thousand, five hundred seventy-four".