422442 has 16 divisors (see below), whose sum is σ = 938880. Its totient is φ = 140796.

The previous prime is 422431. The next prime is 422453. The reversal of 422442 is 244224.

It is an interprime number because it is at equal distance from previous prime (422431) and next prime (422453).

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

It is a congruent number.

It is an unprimeable number.

422442 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 7 ways as a sum of consecutive naturals, for example, 3858 + ... + 3965.

It is an arithmetic number, because the mean of its divisors is an integer number (58680).

2⁴²²⁴⁴² is an apocalyptic number.

422442 is an abundant number, since it is smaller than the sum of its proper divisors (516438).

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

422442 is a wasteful number, since it uses less digits than its factorization.

422442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834 (or 7828 counting only the distinct ones).

The product of its digits is 512, while the sum is 18.

The square root of 422442 is about 649.9553830841. The cubic root of 422442 is about 75.0335849584.

Adding to 422442 its reverse (244224), we get a palindrome (666666).

The spelling of 422442 in words is "four hundred twenty-two thousand, four hundred forty-two", and thus it is an iban number.