422002404 has 18 divisors (see below), whose sum is σ = 1066728390. Its totient is φ = 140667456.

The previous prime is 422002391. The next prime is 422002409. The reversal of 422002404 is 404200224.

422002404 is a `hidden beast` number, since 422 + 0 + 0 + 240 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 263997504 + 158004900 = 16248^2 + 12570^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (422002409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5861109 + ... + 5861180.

Almost surely, 2^422002404 is an apocalyptic number.

It is an amenable number.

422002404 is an abundant number, since it is smaller than the sum of its proper divisors (644725986).

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

422002404 is a wasteful number, since it uses less digits than its factorization.

422002404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11722299 (or 11722294 counting only the distinct ones).

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

The square root of 422002404 is about 20542.6970965353. The cubic root of 422002404 is about 750.0754910679.

Adding to 422002404 its reverse (404200224), we get a palindrome (826202628).

The spelling of 422002404 in words is "four hundred twenty-two million, two thousand, four hundred four".