123996172 has 12 divisors (see below), whose sum is σ = 217942480. Its totient is φ = 61726896.

The previous prime is 123996137. The next prime is 123996233. The reversal of 123996172 is 271699321.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 66768 + ... + 68599.

Almost surely, 2^123996172 is an apocalyptic number.

It is an amenable number.

123996172 is a deficient number, since it is larger than the sum of its proper divisors (93946308).

123996172 is a wasteful number, since it uses less digits than its factorization.

123996172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135600 (or 135598 counting only the distinct ones).

The product of its digits is 40824, while the sum is 40.

The square root of 123996172 is about 11135.3568420594. The cubic root of 123996172 is about 498.6579637670.

The spelling of 123996172 in words is "one hundred twenty-three million, nine hundred ninety-six thousand, one hundred seventy-two".