442026 has 24 divisors (see below), whose sum is σ = 1031940. Its totient is φ = 135936.

The previous prime is 442019. The next prime is 442027. The reversal of 442026 is 620244.

It can be written as a sum of positive squares in 2 ways, for example, as 423801 + 18225 = 651^2 + 135^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (442027) by changing a digit.

442026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711 + ... + 1178.

2⁴⁴²⁰²⁶ is an apocalyptic number.

442026 is an abundant number, since it is smaller than the sum of its proper divisors (589914).

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

442026 is a wasteful number, since it uses less digits than its factorization.

442026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 442026 is about 664.8503591035. The cubic root of 442026 is about 76.1756096118.

The spelling of 442026 in words is "four hundred forty-two thousand, twenty-six".