56042004 has 24 divisors (see below), whose sum is σ = 132608448. Its totient is φ = 18417280.

The previous prime is 56042003. The next prime is 56042057. The reversal of 56042004 is 40024065.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56042003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32037 + ... + 33740.

It is an arithmetic number, because the mean of its divisors is an integer number (5525352).

Almost surely, 2^56042004 is an apocalyptic number.

It is an amenable number.

56042004 is an abundant number, since it is smaller than the sum of its proper divisors (76566444).

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

56042004 is a wasteful number, since it uses less digits than its factorization.

56042004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65855 (or 65853 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 56042004 is about 7486.1207577757. The cubic root of 56042004 is about 382.6818683166.

Adding to 56042004 its reverse (40024065), we get a palindrome (96066069).

The spelling of 56042004 in words is "fifty-six million, forty-two thousand, four", and thus it is an eban number.