422440420422 has 32 divisors (see below), whose sum is σ = 889378715520. Its totient is φ = 133397668800.

The previous prime is 422440420387. The next prime is 422440420427. The reversal of 422440420422 is 224024044224.

It is a happy number.

It is a super-2 number, since 2×422440420422² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 422440420422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422440420427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5148922 + ... + 5230322.

It is an arithmetic number, because the mean of its divisors is an integer number (27793084860).

Almost surely, 2^422440420422 is an apocalyptic number.

422440420422 is an abundant number, since it is smaller than the sum of its proper divisors (466938295098).

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

422440420422 is a wasteful number, since it uses less digits than its factorization.

422440420422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126948.

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 422440420422 its reverse (224024044224), we get a palindrome (646464464646).

The spelling of 422440420422 in words is "four hundred twenty-two billion, four hundred forty million, four hundred twenty thousand, four hundred twenty-two".