56123420 has 24 divisors (see below), whose sum is σ = 118725264. Its totient is φ = 22284416.

The previous prime is 56123407. The next prime is 56123437. The reversal of 56123420 is 2432165.

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, 7502 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (4946886).

Almost surely, 2^56123420 is an apocalyptic number.

It is an amenable number.

56123420 is an abundant number, since it is smaller than the sum of its proper divisors (62601844).

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

56123420 is a wasteful number, since it uses less digits than its factorization.

56123420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20629 (or 20627 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 56123420 is about 7491.5565805779. The cubic root of 56123420 is about 382.8670945710.

Adding to 56123420 its reverse (2432165), we get a palindrome (58555585).

The spelling of 56123420 in words is "fifty-six million, one hundred twenty-three thousand, four hundred twenty".