442556 has 24 divisors (see below), whose sum is σ = 827904. Its totient is φ = 206640.

The previous prime is 442537. The next prime is 442571. The reversal of 442556 is 655244.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 4⁷ + 4⁹ + 5⁷ + 2 + 5⁷ + 6⁵ .

It is a congruent number.

It is an unprimeable number.

442556 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, 5291 + ... + 5373.

It is an arithmetic number, because the mean of its divisors is an integer number (34496).

2⁴⁴²⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

442556 is a deficient number, since it is larger than the sum of its proper divisors (385348).

442556 is a wasteful number, since it uses less digits than its factorization.

442556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 159 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 442556 is about 665.2488256284. The cubic root of 442556 is about 76.2060429254.

The spelling of 442556 in words is "four hundred forty-two thousand, five hundred fifty-six".