123388012 has 12 divisors (see below), whose sum is σ = 235559016. Its totient is φ = 56085440.

The previous prime is 123388009. The next prime is 123388021. The reversal of 123388012 is 210883321.

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, 1402093 + ... + 1402180.

It is an arithmetic number, because the mean of its divisors is an integer number (19629918).

Almost surely, 2^123388012 is an apocalyptic number.

It is an amenable number.

123388012 is a deficient number, since it is larger than the sum of its proper divisors (112171004).

123388012 is a wasteful number, since it uses less digits than its factorization.

123388012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804288 (or 2804286 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 123388012 is about 11108.0156643750. The cubic root of 123388012 is about 497.8413767694.

The spelling of 123388012 in words is "one hundred twenty-three million, three hundred eighty-eight thousand, twelve".