422713161 has 40 divisors (see below), whose sum is σ = 683393480. Its totient is φ = 258847488.

The previous prime is 422713147. The next prime is 422713171. The reversal of 422713161 is 161317224.

It can be written as a sum of positive squares in 4 ways, for example, as 9363600 + 413349561 = 3060^2 + 20331^2 .

It is not a de Polignac number, because 422713161 - 2⁶ = 422713097 is a prime.

It is a super-2 number, since 2×422713161² = 357372832965223842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422713141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 240261 + ... + 242013.

It is an arithmetic number, because the mean of its divisors is an integer number (17084837).

Almost surely, 2^422713161 is an apocalyptic number.

It is an amenable number.

422713161 is a deficient number, since it is larger than the sum of its proper divisors (260680319).

422713161 is a wasteful number, since it uses less digits than its factorization.

422713161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007 (or 1998 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 422713161 is about 20559.9893239272. The cubic root of 422713161 is about 750.4963594306.

The spelling of 422713161 in words is "four hundred twenty-two million, seven hundred thirteen thousand, one hundred sixty-one".