422043020 has 96 divisors (see below), whose sum is σ = 1077608448. Its totient is φ = 135539712.

The previous prime is 422043019. The next prime is 422043047. The reversal of 422043020 is 20340224.

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

It is a self number, because there is not a number n which added to its sum of digits gives 422043020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 911309 + ... + 911771.

It is an arithmetic number, because the mean of its divisors is an integer number (11225088).

Almost surely, 2^422043020 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 422043020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538804224).

422043020 is an abundant number, since it is smaller than the sum of its proper divisors (655565428).

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

422043020 is a wasteful number, since it uses less digits than its factorization.

422043020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 422043020 is about 20543.6856479065. The cubic root of 422043020 is about 750.0995541921.

Adding to 422043020 its reverse (20340224), we get a palindrome (442383244).

The spelling of 422043020 in words is "four hundred twenty-two million, forty-three thousand, twenty".