423122137 has 2 divisors, whose sum is σ = 423122138. Its totient is φ = 423122136.

The previous prime is 423122123. The next prime is 423122201. The reversal of 423122137 is 731221324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394777161 + 28344976 = 19869^2 + 5324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423122137 is a prime.

It is not a weakly prime, because it can be changed into another prime (423192137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211561068 + 211561069.

It is an arithmetic number, because the mean of its divisors is an integer number (211561069).

Almost surely, 2^423122137 is an apocalyptic number.

It is an amenable number.

423122137 is a deficient number, since it is larger than the sum of its proper divisors (1).

423122137 is an equidigital number, since it uses as much as digits as its factorization.

423122137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 423122137 is about 20569.9328389764. The cubic root of 423122137 is about 750.7383170935.

The spelling of 423122137 in words is "four hundred twenty-three million, one hundred twenty-two thousand, one hundred thirty-seven".