523143442 has 16 divisors (see below), whose sum is σ = 811108800. Its totient is φ = 252919440.

The previous prime is 523143427. The next prime is 523143463. The reversal of 523143442 is 244341325.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 523143442.

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, 29142 + ... + 43537.

It is an arithmetic number, because the mean of its divisors is an integer number (50694300).

Almost surely, 2^523143442 is an apocalyptic number.

523143442 is a deficient number, since it is larger than the sum of its proper divisors (287965358).

523143442 is a wasteful number, since it uses less digits than its factorization.

523143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72801.

The product of its digits is 11520, while the sum is 28.

The square root of 523143442 is about 22872.3291774144. The cubic root of 523143442 is about 805.7622716725.

Adding to 523143442 its reverse (244341325), we get a palindrome (767484767).

The spelling of 523143442 in words is "five hundred twenty-three million, one hundred forty-three thousand, four hundred forty-two".