422404 has 6 divisors (see below), whose sum is σ = 739214. Its totient is φ = 211200.

The previous prime is 422393. The next prime is 422407. The reversal of 422404 is 404224.

It can be written as a sum of positive squares in only one way, i.e., 419904 + 2500 = 648^2 + 50^2 .

It is not an unprimeable number, because it can be changed into a prime (422407) by changing a digit.

422404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52797 + ... + 52804.

2⁴²²⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

422404 is a deficient number, since it is larger than the sum of its proper divisors (316810).

422404 is a wasteful number, since it uses less digits than its factorization.

422404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105605 (or 105603 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 422404 is about 649.9261496509. The cubic root of 422404 is about 75.0313350545.

Adding to 422404 its reverse (404224), we get a palindrome (826628).

The spelling of 422404 in words is "four hundred twenty-two thousand, four hundred four", and thus it is an iban number.