123192172 has 12 divisors (see below), whose sum is σ = 218540056. Its totient is φ = 60752160.

The previous prime is 123192161. The next prime is 123192187. The reversal of 123192172 is 271291321.

It is a super-2 number, since 2×123192172² = 30352622484155168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123192172.

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, 210654 + ... + 211237.

Almost surely, 2^123192172 is an apocalyptic number.

It is an amenable number.

123192172 is a deficient number, since it is larger than the sum of its proper divisors (95347884).

123192172 is a wasteful number, since it uses less digits than its factorization.

123192172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421968 (or 421966 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 123192172 is about 11099.1969078848. The cubic root of 123192172 is about 497.5778479729.

The spelling of 123192172 in words is "one hundred twenty-three million, one hundred ninety-two thousand, one hundred seventy-two".