56123430 has 48 divisors (see below), whose sum is σ = 148064112. Its totient is φ = 13604800.

The previous prime is 56123407. The next prime is 56123437. The reversal of 56123430 is 3432165.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56123430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56123437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4101 + ... + 11360.

It is an arithmetic number, because the mean of its divisors is an integer number (3084669).

Almost surely, 2^56123430 is an apocalyptic number.

56123430 is an abundant number, since it is smaller than the sum of its proper divisors (91940682).

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

56123430 is a wasteful number, since it uses less digits than its factorization.

56123430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15493 (or 15482 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 56123430 is about 7491.5572479959. The cubic root of 56123430 is about 382.8671173106.

Adding to 56123430 its reverse (3432165), we get a palindrome (59555595).

The spelling of 56123430 in words is "fifty-six million, one hundred twenty-three thousand, four hundred thirty".