123904012 has 12 divisors (see below), whose sum is σ = 220507560. Its totient is φ = 60901856.

The previous prime is 123904003. The next prime is 123904031. The reversal of 123904012 is 210409321.

It is a super-2 number, since 2×123904012² = 30704408379392288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262273 + ... + 262744.

It is an arithmetic number, because the mean of its divisors is an integer number (18375630).

Almost surely, 2^123904012 is an apocalyptic number.

It is an amenable number.

123904012 is a deficient number, since it is larger than the sum of its proper divisors (96603548).

123904012 is a wasteful number, since it uses less digits than its factorization.

123904012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525080 (or 525078 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 123904012 is about 11131.2179028173. The cubic root of 123904012 is about 498.5343908438.

The spelling of 123904012 in words is "one hundred twenty-three million, nine hundred four thousand, twelve".