422140220 has 24 divisors (see below), whose sum is σ = 892878000. Its totient is φ = 167640192.

The previous prime is 422140219. The next prime is 422140231. The reversal of 422140220 is 22041224.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73145 + ... + 78704.

It is an arithmetic number, because the mean of its divisors is an integer number (37203250).

Almost surely, 2^422140220 is an apocalyptic number.

It is an amenable number.

422140220 is an abundant number, since it is smaller than the sum of its proper divisors (470737780).

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

422140220 is a wasteful number, since it uses less digits than its factorization.

422140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151997 (or 151995 counting only the distinct ones).

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

The square root of 422140220 is about 20546.0512021167. The cubic root of 422140220 is about 750.1571344834.

Adding to 422140220 its reverse (22041224), we get a palindrome (444181444).

The spelling of 422140220 in words is "four hundred twenty-two million, one hundred forty thousand, two hundred twenty".