523404442 has 32 divisors (see below), whose sum is σ = 901139904. Its totient is φ = 225820800.

The previous prime is 523404437. The next prime is 523404463. The reversal of 523404442 is 244404325.

It is a self number, because there is not a number n which added to its sum of digits gives 523404442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25533 + ... + 41215.

It is an arithmetic number, because the mean of its divisors is an integer number (28160622).

Almost surely, 2^523404442 is an apocalyptic number.

523404442 is a deficient number, since it is larger than the sum of its proper divisors (377735462).

523404442 is a wasteful number, since it uses less digits than its factorization.

523404442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15774.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 523404442 is about 22878.0340501539. The cubic root of 523404442 is about 805.8962495784.

Adding to 523404442 its reverse (244404325), we get a palindrome (767808767).

The spelling of 523404442 in words is "five hundred twenty-three million, four hundred four thousand, four hundred forty-two".