442855 has 8 divisors (see below), whose sum is σ = 607392. Its totient is φ = 303648.

The previous prime is 442843. The next prime is 442861. The reversal of 442855 is 558244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442855 - 2⁵ = 442823 is a prime.

It is a super-2 number, since 2×442855² = 392241102050, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 6292 + ... + 6361.

It is an arithmetic number, because the mean of its divisors is an integer number (75924).

2⁴⁴²⁸⁵⁵ is an apocalyptic number.

442855 is a deficient number, since it is larger than the sum of its proper divisors (164537).

442855 is a wasteful number, since it uses less digits than its factorization.

442855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12665.

The product of its digits is 6400, while the sum is 28.

The square root of 442855 is about 665.4735156263. The cubic root of 442855 is about 76.2232011889.

The spelling of 442855 in words is "four hundred forty-two thousand, eight hundred fifty-five".