556680042 has 48 divisors (see below), whose sum is σ = 1252604808. Its totient is φ = 178536960.

The previous prime is 556680037. The next prime is 556680043. The reversal of 556680042 is 240086655.

556680042 is a `hidden beast` number, since 556 + 68 + 0 + 0 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 420701121 + 135978921 = 20511^2 + 11661^2 .

It is a super-2 number, since 2×556680042² = 619785338322243528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 556679979 and 556680006.

It is not an unprimeable number, because it can be changed into a prime (556680043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48708 + ... + 59040.

Almost surely, 2^556680042 is an apocalyptic number.

556680042 is an abundant number, since it is smaller than the sum of its proper divisors (695924766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556680042 is a wasteful number, since it uses less digits than its factorization.

556680042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10455 (or 10452 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 556680042 is about 23594.0679409041. The cubic root of 556680042 is about 822.6249620590.

The spelling of 556680042 in words is "five hundred fifty-six million, six hundred eighty thousand, forty-two".