442860 has 72 divisors (see below), whose sum is σ = 1385328. Its totient is φ = 105600.

The previous prime is 442843. The next prime is 442861. The reversal of 442860 is 68244.

It is a super-2 number, since 2×442860² = 392249959200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7230 + ... + 7290.

2⁴⁴²⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692664).

442860 is an abundant number, since it is smaller than the sum of its proper divisors (942468).

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

442860 is a wasteful number, since it uses less digits than its factorization.

442860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 442860 is about 665.4772723392. The cubic root of 442860 is about 76.2234880507.

The spelling of 442860 in words is "four hundred forty-two thousand, eight hundred sixty".