556742 has 12 divisors (see below), whose sum is σ = 867516. Its totient is φ = 267960.

The previous prime is 556741. The next prime is 556753. The reversal of 556742 is 247655.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1517 + ... + 1847.

It is an arithmetic number, because the mean of its divisors is an integer number (72293).

2⁵⁵⁶⁷⁴² is an apocalyptic number.

556742 is a deficient number, since it is larger than the sum of its proper divisors (310774).

556742 is a wasteful number, since it uses less digits than its factorization.

556742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 362 counting only the distinct ones).

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

The square root of 556742 is about 746.1514591556. The cubic root of 556742 is about 82.2655480072.

The spelling of 556742 in words is "five hundred fifty-six thousand, seven hundred forty-two".