422420020 has 48 divisors (see below), whose sum is σ = 988339968. Its totient is φ = 150335360.

The previous prime is 422419997. The next prime is 422420021. The reversal of 422420020 is 20024224.

It is a junction number, because it is equal to n+sod(n) for n = 422419976 and 422420003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422420021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10087 + ... + 30766.

It is an arithmetic number, because the mean of its divisors is an integer number (20590416).

Almost surely, 2^422420020 is an apocalyptic number.

It is an amenable number.

422420020 is an abundant number, since it is smaller than the sum of its proper divisors (565919948).

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

422420020 is a wasteful number, since it uses less digits than its factorization.

422420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40920 (or 40918 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 422420020 is about 20552.8591684953. The cubic root of 422420020 is about 750.3228358309.

Adding to 422420020 its reverse (20024224), we get a palindrome (442444244).

The spelling of 422420020 in words is "four hundred twenty-two million, four hundred twenty thousand, twenty".