123256146 has 32 divisors (see below), whose sum is σ = 271656000. Its totient is φ = 37041984.

The previous prime is 123256123. The next prime is 123256153. The reversal of 123256146 is 641652321.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15021 + ... + 21728.

It is an arithmetic number, because the mean of its divisors is an integer number (8489250).

Almost surely, 2^123256146 is an apocalyptic number.

123256146 is an abundant number, since it is smaller than the sum of its proper divisors (148399854).

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

123256146 is a wasteful number, since it uses less digits than its factorization.

123256146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36810.

The product of its digits is 8640, while the sum is 30.

The square root of 123256146 is about 11102.0784540553. The cubic root of 123256146 is about 497.6639642040.

The spelling of 123256146 in words is "one hundred twenty-three million, two hundred fifty-six thousand, one hundred forty-six".