442722 has 32 divisors (see below), whose sum is σ = 1032192. Its totient is φ = 123984.

The previous prime is 442721. The next prime is 442733. The reversal of 442722 is 227244.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442722.

It is not an unprimeable number, because it can be changed into a prime (442721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3423 + ... + 3549.

It is an arithmetic number, because the mean of its divisors is an integer number (32256).

2⁴⁴²⁷²² is an apocalyptic number.

442722 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 442722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516096).

442722 is an abundant number, since it is smaller than the sum of its proper divisors (589470).

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

442722 is a wasteful number, since it uses less digits than its factorization.

442722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its digits is 896, while the sum is 21.

The square root of 442722 is about 665.3735792771. The cubic root of 442722 is about 76.2155698718.

Adding to 442722 its reverse (227244), we get a palindrome (669966).

The spelling of 442722 in words is "four hundred forty-two thousand, seven hundred twenty-two", and thus it is an iban number.