123412056 has 32 divisors (see below), whose sum is σ = 309173760. Its totient is φ = 41051552.

The previous prime is 123412019. The next prime is 123412063. The reversal of 123412056 is 650214321.

It is a super-2 number, since 2×123412056² = 30461071132294272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 6961 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (9661680).

Almost surely, 2^123412056 is an apocalyptic number.

It is an amenable number.

123412056 is an abundant number, since it is smaller than the sum of its proper divisors (185761704).

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

123412056 is a wasteful number, since it uses less digits than its factorization.

123412056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735 (or 10731 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 123412056 is about 11109.0978931685. The cubic root of 123412056 is about 497.8737119491.

Adding to 123412056 its reverse (650214321), we get a palindrome (773626377).

The spelling of 123412056 in words is "one hundred twenty-three million, four hundred twelve thousand, fifty-six".