123888172 has 12 divisors (see below), whose sum is σ = 217035280. Its totient is φ = 61878096.

The previous prime is 123888161. The next prime is 123888179. The reversal of 123888172 is 271888321.

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 not an unprimeable number, because it can be changed into a prime (123888179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12147 + ... + 19882.

Almost surely, 2^123888172 is an apocalyptic number.

It is an amenable number.

123888172 is a deficient number, since it is larger than the sum of its proper divisors (93147108).

123888172 is a wasteful number, since it uses less digits than its factorization.

123888172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33000 (or 32998 counting only the distinct ones).

The product of its digits is 43008, while the sum is 40.

The square root of 123888172 is about 11130.5063676366. The cubic root of 123888172 is about 498.5131455772.

The spelling of 123888172 in words is "one hundred twenty-three million, eight hundred eighty-eight thousand, one hundred seventy-two".