123886172 has 12 divisors (see below), whose sum is σ = 221413920. Its totient is φ = 60625056.

The previous prime is 123886171. The next prime is 123886177. The reversal of 123886172 is 271688321.

It is a super-2 number, since 2×123886172² = 30695567225627168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123886171) 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, 329297 + ... + 329672.

It is an arithmetic number, because the mean of its divisors is an integer number (18451160).

Almost surely, 2^123886172 is an apocalyptic number.

It is an amenable number.

123886172 is a deficient number, since it is larger than the sum of its proper divisors (97527748).

123886172 is a wasteful number, since it uses less digits than its factorization.

123886172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659020 (or 659018 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 123886172 is about 11130.4165241019. The cubic root of 123886172 is about 498.5104629653.

The spelling of 123886172 in words is "one hundred twenty-three million, eight hundred eighty-six thousand, one hundred seventy-two".