422420012 has 48 divisors (see below), whose sum is σ = 923424768. Its totient is φ = 164885760.

The previous prime is 422419997. The next prime is 422420021. The reversal of 422420012 is 210024224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443 + ... + 29069.

It is an arithmetic number, because the mean of its divisors is an integer number (19238016).

Almost surely, 2^422420012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422420012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461712384).

422420012 is an abundant number, since it is smaller than the sum of its proper divisors (501004756).

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

422420012 is a wasteful number, since it uses less digits than its factorization.

422420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28686 (or 28684 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 422420012 is about 20552.8589738751. The cubic root of 422420012 is about 750.3228310942.

Adding to 422420012 its reverse (210024224), we get a palindrome (632444236).

The spelling of 422420012 in words is "four hundred twenty-two million, four hundred twenty thousand, twelve".