442236 has 24 divisors (see below), whose sum is σ = 1043280. Its totient is φ = 145792.

The previous prime is 442229. The next prime is 442237. The reversal of 442236 is 632244.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442237) 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, 1510 + ... + 1778.

It is an arithmetic number, because the mean of its divisors is an integer number (43470).

2⁴⁴²²³⁶ is an apocalyptic number.

It is an amenable number.

442236 is an abundant number, since it is smaller than the sum of its proper divisors (601044).

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

442236 is a wasteful number, since it uses less digits than its factorization.

442236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 411 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 442236 is about 665.0082706253. The cubic root of 442236 is about 76.1876710029.

The spelling of 442236 in words is "four hundred forty-two thousand, two hundred thirty-six".