556123430 has 16 divisors (see below), whose sum is σ = 1035540720. Its totient is φ = 214778592.

The previous prime is 556123409. The next prime is 556123433. The reversal of 556123430 is 34321655.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 556123393 and 556123402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556123433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958544 + ... + 959123.

It is an arithmetic number, because the mean of its divisors is an integer number (64721295).

Almost surely, 2^556123430 is an apocalyptic number.

556123430 is a deficient number, since it is larger than the sum of its proper divisors (479417290).

556123430 is a wasteful number, since it uses less digits than its factorization.

556123430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917703.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 556123430 is about 23582.2693988513. The cubic root of 556123430 is about 822.3506958231.

The spelling of 556123430 in words is "five hundred fifty-six million, one hundred twenty-three thousand, four hundred thirty".