422242161 has 16 divisors (see below), whose sum is σ = 614718720. Its totient is φ = 255675920.

The previous prime is 422242157. The next prime is 422242169. The reversal of 422242161 is 161242224.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 422242161 - 2² = 422242157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (422242169) 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, 36466 + ... + 46628.

It is an arithmetic number, because the mean of its divisors is an integer number (38419920).

Almost surely, 2^422242161 is an apocalyptic number.

It is an amenable number.

422242161 is a deficient number, since it is larger than the sum of its proper divisors (192476559).

422242161 is a wasteful number, since it uses less digits than its factorization.

422242161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11436.

The product of its digits is 1536, while the sum is 24.

The square root of 422242161 is about 20548.5318453655. The cubic root of 422242161 is about 750.2175137998.

Adding to 422242161 its reverse (161242224), we get a palindrome (583484385).

The spelling of 422242161 in words is "four hundred twenty-two million, two hundred forty-two thousand, one hundred sixty-one".