422012420 has 48 divisors (see below), whose sum is σ = 987759360. Its totient is φ = 150511104.

The previous prime is 422012419. The next prime is 422012429. The reversal of 422012420 is 24210224.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (422012429) 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, 26204 + ... + 39123.

It is an arithmetic number, because the mean of its divisors is an integer number (20578320).

Almost surely, 2^422012420 is an apocalyptic number.

It is an amenable number.

422012420 is an abundant number, since it is smaller than the sum of its proper divisors (565746940).

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

422012420 is a wasteful number, since it uses less digits than its factorization.

422012420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65372 (or 65370 counting only the distinct ones).

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

The square root of 422012420 is about 20542.9408800201. The cubic root of 422012420 is about 750.0814252337.

Adding to 422012420 its reverse (24210224), we get a palindrome (446222644).

The spelling of 422012420 in words is "four hundred twenty-two million, twelve thousand, four hundred twenty".