557123042 has 12 divisors (see below), whose sum is σ = 972123030. Its totient is φ = 238766976.

The previous prime is 557123029. The next prime is 557123051. The reversal of 557123042 is 240321755.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 438944401 + 118178641 = 20951^2 + 10871^2 .

It is a junction number, because it is equal to n+sod(n) for n = 557122996 and 557123014.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2842367 + ... + 2842562.

Almost surely, 2^557123042 is an apocalyptic number.

557123042 is a deficient number, since it is larger than the sum of its proper divisors (414999988).

557123042 is a wasteful number, since it uses less digits than its factorization.

557123042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684945 (or 5684938 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 557123042 is about 23603.4540269004. The cubic root of 557123042 is about 822.8431162382.

Adding to 557123042 its reverse (240321755), we get a palindrome (797444797).

The spelling of 557123042 in words is "five hundred fifty-seven million, one hundred twenty-three thousand, forty-two".