520042004 has 6 divisors (see below), whose sum is σ = 910073514. Its totient is φ = 260021000.

The previous prime is 520041997. The next prime is 520042009. The reversal of 520042004 is 400240025.

It can be written as a sum of positive squares in only one way, i.e., 458388100 + 61653904 = 21410^2 + 7852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520042009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65005247 + ... + 65005254.

It is an arithmetic number, because the mean of its divisors is an integer number (151678919).

Almost surely, 2^520042004 is an apocalyptic number.

It is an amenable number.

520042004 is a deficient number, since it is larger than the sum of its proper divisors (390031510).

520042004 is a wasteful number, since it uses less digits than its factorization.

520042004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130010505 (or 130010503 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 520042004 is about 22804.4294820107. The cubic root of 520042004 is about 804.1668032585.

Adding to 520042004 its reverse (400240025), we get a palindrome (920282029).

The spelling of 520042004 in words is "five hundred twenty million, forty-two thousand, four".