423522137 has 2 divisors, whose sum is σ = 423522138. Its totient is φ = 423522136.

The previous prime is 423522109. The next prime is 423522167. The reversal of 423522137 is 731225324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423495241 + 26896 = 20579^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 423522137 - 2²⁰ = 422473561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423522107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211761068 + 211761069.

It is an arithmetic number, because the mean of its divisors is an integer number (211761069).

Almost surely, 2^423522137 is an apocalyptic number.

It is an amenable number.

423522137 is a deficient number, since it is larger than the sum of its proper divisors (1).

423522137 is an equidigital number, since it uses as much as digits as its factorization.

423522137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 423522137 is about 20579.6534713294. The cubic root of 423522137 is about 750.9748136208.

The spelling of 423522137 in words is "four hundred twenty-three million, five hundred twenty-two thousand, one hundred thirty-seven".