442278 has 12 divisors (see below), whose sum is σ = 958308. Its totient is φ = 147420.

The previous prime is 442271. The next prime is 442283. The reversal of 442278 is 872244.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442271) 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 5 ways as a sum of consecutive naturals, for example, 12268 + ... + 12303.

It is an arithmetic number, because the mean of its divisors is an integer number (79859).

2⁴⁴²²⁷⁸ is an apocalyptic number.

442278 is an abundant number, since it is smaller than the sum of its proper divisors (516030).

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

442278 is a wasteful number, since it uses less digits than its factorization.

442278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24579 (or 24576 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 442278 is about 665.0398484302. The cubic root of 442278 is about 76.1900828229.

The spelling of 442278 in words is "four hundred forty-two thousand, two hundred seventy-eight".