422721130 has 16 divisors (see below), whose sum is σ = 819428904. Its totient is φ = 156081600.

The previous prime is 422721119. The next prime is 422721137. The reversal of 422721130 is 31127224.

It can be written as a sum of positive squares in 4 ways, for example, as 381850681 + 40870449 = 19541^2 + 6393^2 .

It is not an unprimeable number, because it can be changed into a prime (422721137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625721 + ... + 1625980.

Almost surely, 2^422721130 is an apocalyptic number.

422721130 is a deficient number, since it is larger than the sum of its proper divisors (396707774).

422721130 is a wasteful number, since it uses less digits than its factorization.

422721130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251721.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 422721130 is about 20560.1831217526. The cubic root of 422721130 is about 750.5010755269.

Adding to 422721130 its reverse (31127224), we get a palindrome (453848354).

The spelling of 422721130 in words is "four hundred twenty-two million, seven hundred twenty-one thousand, one hundred thirty".