422004420 has 36 divisors (see below), whose sum is σ = 1280080620. Its totient is φ = 112534464.

The previous prime is 422004419. The next prime is 422004449. The reversal of 422004420 is 24400224.

422004420 is a `hidden beast` number, since 4 + 220 + 0 + 442 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 219454596 + 202549824 = 14814^2 + 14232^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 422004393 and 422004402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1172055 + ... + 1172414.

It is an arithmetic number, because the mean of its divisors is an integer number (35557795).

Almost surely, 2^422004420 is an apocalyptic number.

It is an amenable number.

422004420 is an abundant number, since it is smaller than the sum of its proper divisors (858076200).

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

422004420 is a wasteful number, since it uses less digits than its factorization.

422004420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344484 (or 2344479 counting only the distinct ones).

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

The square root of 422004420 is about 20542.7461650092. The cubic root of 422004420 is about 750.0766854922.

Adding to 422004420 its reverse (24400224), we get a palindrome (446404644).

The spelling of 422004420 in words is "four hundred twenty-two million, four thousand, four hundred twenty".