422140109 has 2 divisors, whose sum is σ = 422140110. Its totient is φ = 422140108.

The previous prime is 422140099. The next prime is 422140123. The reversal of 422140109 is 901041224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264712900 + 157427209 = 16270^2 + 12547^2 .

It is a cyclic number.

It is not a de Polignac number, because 422140109 - 2²⁰ = 421091533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422140189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211070054 + 211070055.

It is an arithmetic number, because the mean of its divisors is an integer number (211070055).

Almost surely, 2^422140109 is an apocalyptic number.

It is an amenable number.

422140109 is a deficient number, since it is larger than the sum of its proper divisors (1).

422140109 is an equidigital number, since it uses as much as digits as its factorization.

422140109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 422140109 is about 20546.0485008675. The cubic root of 422140109 is about 750.1570687332.

The spelling of 422140109 in words is "four hundred twenty-two million, one hundred forty thousand, one hundred nine".