422127660 has 96 divisors (see below), whose sum is σ = 1207084032. Its totient is φ = 110199040.

The previous prime is 422127653. The next prime is 422127691. The reversal of 422127660 is 66721224.

It is a super-2 number, since 2×422127660² = 356383522674151200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 838969 + ... + 839471.

It is an arithmetic number, because the mean of its divisors is an integer number (12573792).

Almost surely, 2^422127660 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 422127660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603542016).

422127660 is an abundant number, since it is smaller than the sum of its proper divisors (784956372).

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

422127660 is a wasteful number, since it uses less digits than its factorization.

422127660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 422127660 is about 20545.7455450027. The cubic root of 422127660 is about 750.1496945645.

Adding to 422127660 its reverse (66721224), we get a palindrome (488848884).

The spelling of 422127660 in words is "four hundred twenty-two million, one hundred twenty-seven thousand, six hundred sixty".