123356872 has 16 divisors (see below), whose sum is σ = 231744240. Its totient is φ = 61558416.

The previous prime is 123356861. The next prime is 123356887. The reversal of 123356872 is 278653321.

It is a super-3 number, since 3×123356872³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10558 + ... + 18925.

It is an arithmetic number, because the mean of its divisors is an integer number (14484015).

Almost surely, 2^123356872 is an apocalyptic number.

It is an amenable number.

123356872 is a deficient number, since it is larger than the sum of its proper divisors (108387368).

123356872 is a wasteful number, since it uses less digits than its factorization.

123356872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30012 (or 30008 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 123356872 is about 11106.6138854288. The cubic root of 123356872 is about 497.7994924065.

The spelling of 123356872 in words is "one hundred twenty-three million, three hundred fifty-six thousand, eight hundred seventy-two".