123164556 has 24 divisors (see below), whose sum is σ = 294068544. Its totient is φ = 40099920.

The previous prime is 123164521. The next prime is 123164567. The reversal of 123164556 is 655461321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118830 + ... + 119861.

It is an arithmetic number, because the mean of its divisors is an integer number (12252856).

Almost surely, 2^123164556 is an apocalyptic number.

It is an amenable number.

123164556 is an abundant number, since it is smaller than the sum of its proper divisors (170903988).

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

123164556 is a wasteful number, since it uses less digits than its factorization.

123164556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238741 (or 238739 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 123164556 is about 11097.9527841850. The cubic root of 123164556 is about 497.5406645043.

The spelling of 123164556 in words is "one hundred twenty-three million, one hundred sixty-four thousand, five hundred fifty-six".