124139872 has 24 divisors (see below), whose sum is σ = 252286272. Its totient is φ = 60067200.

The previous prime is 124139843. The next prime is 124139881. The reversal of 124139872 is 278931421.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 61579 + ... + 63562.

It is an arithmetic number, because the mean of its divisors is an integer number (10511928).

Almost surely, 2^124139872 is an apocalyptic number.

It is an amenable number.

124139872 is an abundant number, since it is smaller than the sum of its proper divisors (128146400).

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

124139872 is a wasteful number, since it uses less digits than its factorization.

124139872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125182 (or 125174 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 124139872 is about 11141.8073937759. The cubic root of 124139872 is about 498.8505220928.

The spelling of 124139872 in words is "one hundred twenty-four million, one hundred thirty-nine thousand, eight hundred seventy-two".