123879924 has 72 divisors (see below), whose sum is σ = 376725440. Its totient is φ = 33530112.

The previous prime is 123879913. The next prime is 123879949. The reversal of 123879924 is 429978321.

It is a self number, because there is not a number n which added to its sum of digits gives 123879924.

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 23 ways as a sum of consecutive naturals, for example, 8149 + ... + 17724.

Almost surely, 2^123879924 is an apocalyptic number.

123879924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123879924 is an abundant number, since it is smaller than the sum of its proper divisors (252845516).

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

123879924 is a wasteful number, since it uses less digits than its factorization.

123879924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25909 (or 25904 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 123879924 is about 11130.1358482275. The cubic root of 123879924 is about 498.5020822997.

The spelling of 123879924 in words is "one hundred twenty-three million, eight hundred seventy-nine thousand, nine hundred twenty-four".