123389872 has 40 divisors (see below), whose sum is σ = 242921952. Its totient is φ = 60710400.

The previous prime is 123389803. The next prime is 123389879. The reversal of 123389872 is 278983321.

It is not an unprimeable number, because it can be changed into a prime (123389879) 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, 396597 + ... + 396907.

Almost surely, 2^123389872 is an apocalyptic number.

It is an amenable number.

123389872 is a deficient number, since it is larger than the sum of its proper divisors (119532080).

123389872 is a wasteful number, since it uses less digits than its factorization.

123389872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 631 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 123389872 is about 11108.0993873840. The cubic root of 123389872 is about 497.8438783099.

The spelling of 123389872 in words is "one hundred twenty-three million, three hundred eighty-nine thousand, eight hundred seventy-two".