442256 has 20 divisors (see below), whose sum is σ = 867504. Its totient is φ = 218400.

The previous prime is 442243. The next prime is 442271. The reversal of 442256 is 652244.

442256 = T₁₅₀ + T₁₅₁ + ... + T₁₈₁.

It is an unprimeable number.

442256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 1991 + ... + 2201.

2⁴⁴²²⁵⁶ is an apocalyptic number.

It is an amenable number.

442256 is a deficient number, since it is larger than the sum of its proper divisors (425248).

442256 is a wasteful number, since it uses less digits than its factorization.

442256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 344 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 442256 is about 665.0233078622. The cubic root of 442256 is about 76.1888195076.

The spelling of 442256 in words is "four hundred forty-two thousand, two hundred fifty-six".