56140420 has 48 divisors (see below), whose sum is σ = 135233280. Its totient is φ = 19177344.

The previous prime is 56140397. The next prime is 56140423. The reversal of 56140420 is 2404165.

It is a junction number, because it is equal to n+sod(n) for n = 56140391 and 56140400.

It is not an unprimeable number, because it can be changed into a prime (56140423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49702 + ... + 50818.

It is an arithmetic number, because the mean of its divisors is an integer number (2817360).

Almost surely, 2^56140420 is an apocalyptic number.

It is an amenable number.

56140420 is an abundant number, since it is smaller than the sum of its proper divisors (79092860).

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

56140420 is a wasteful number, since it uses less digits than its factorization.

56140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 56140420 is about 7492.6911053373. The cubic root of 56140420 is about 382.9057479742.

Adding to 56140420 its reverse (2404165), we get a palindrome (58544585).

The spelling of 56140420 in words is "fifty-six million, one hundred forty thousand, four hundred twenty".