422553420 has 72 divisors (see below), whose sum is σ = 1289512224. Its totient is φ = 111998208.

The previous prime is 422553413. The next prime is 422553427. The reversal of 422553420 is 24355224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (422553413) and next prime (422553427).

It is not an unprimeable number, because it can be changed into a prime (422553427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23032 + ... + 37088.

It is an arithmetic number, because the mean of its divisors is an integer number (17909892).

Almost surely, 2^422553420 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 422553420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644756112).

422553420 is an abundant number, since it is smaller than the sum of its proper divisors (866958804).

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

422553420 is a wasteful number, since it uses less digits than its factorization.

422553420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14239 (or 14234 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 422553420 is about 20556.1042028883. The cubic root of 422553420 is about 750.4018113584.

The spelling of 422553420 in words is "four hundred twenty-two million, five hundred fifty-three thousand, four hundred twenty".