442578 has 16 divisors (see below), whose sum is σ = 937440. Its totient is φ = 138816.

The previous prime is 442577. The next prime is 442579. The reversal of 442578 is 875244.

It is an interprime number because it is at equal distance from previous prime (442577) and next prime (442579).

It is not an unprimeable number, because it can be changed into a prime (442571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (58590).

2⁴⁴²⁵⁷⁸ is an apocalyptic number.

442578 is an abundant number, since it is smaller than the sum of its proper divisors (494862).

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

442578 is a wasteful number, since it uses less digits than its factorization.

442578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361.

The product of its digits is 8960, while the sum is 30.

The square root of 442578 is about 665.2653605893. The cubic root of 442578 is about 76.2073056697.

The spelling of 442578 in words is "four hundred forty-two thousand, five hundred seventy-eight".