422244161 has 4 divisors (see below), whose sum is σ = 422287152. Its totient is φ = 422201172.

The previous prime is 422244107. The next prime is 422244167. The reversal of 422244161 is 161442224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422244161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422244161.

It is not an unprimeable number, because it can be changed into a prime (422244167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286 + ... + 29088.

It is an arithmetic number, because the mean of its divisors is an integer number (105571788).

Almost surely, 2^422244161 is an apocalyptic number.

It is an amenable number.

422244161 is a deficient number, since it is larger than the sum of its proper divisors (42991).

422244161 is a wasteful number, since it uses less digits than its factorization.

422244161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42990.

The product of its digits is 3072, while the sum is 26.

The square root of 422244161 is about 20548.5805105852. The cubic root of 422244161 is about 750.2186982959.

Adding to 422244161 its reverse (161442224), we get a palindrome (583686385).

The spelling of 422244161 in words is "four hundred twenty-two million, two hundred forty-four thousand, one hundred sixty-one".