557942 has 16 divisors (see below), whose sum is σ = 1043712. Its totient is φ = 217320.

The previous prime is 557927. The next prime is 557981. The reversal of 557942 is 249755.

It is a super-2 number, since 2×557942² = 622598550728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 557899 and 557908.

It is a congruent number.

It is an unprimeable number.

557942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1658 + ... + 1965.

It is an arithmetic number, because the mean of its divisors is an integer number (65232).

2⁵⁵⁷⁹⁴² is an apocalyptic number.

557942 is a deficient number, since it is larger than the sum of its proper divisors (485770).

557942 is a wasteful number, since it uses less digits than its factorization.

557942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643.

The product of its digits is 12600, while the sum is 32.

The square root of 557942 is about 746.9551526029. The cubic root of 557942 is about 82.3246105631.

It can be divided in two parts, 55 and 7942, that added together give a palindrome (7997).

The spelling of 557942 in words is "five hundred fifty-seven thousand, nine hundred forty-two".