123959992 has 16 divisors (see below), whose sum is σ = 250304040. Its totient is φ = 57212256.

The previous prime is 123959963. The next prime is 123960017. The reversal of 123959992 is 299959321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595858 + ... + 596065.

Almost surely, 2^123959992 is an apocalyptic number.

It is an amenable number.

123959992 is an abundant number, since it is smaller than the sum of its proper divisors (126344048).

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

123959992 is a wasteful number, since it uses less digits than its factorization.

123959992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191942 (or 1191938 counting only the distinct ones).

The product of its digits is 393660, while the sum is 49.

The square root of 123959992 is about 11133.7321685049. The cubic root of 123959992 is about 498.6094590434.

The spelling of 123959992 in words is "one hundred twenty-three million, nine hundred fifty-nine thousand, nine hundred ninety-two".