12423161 has 2 divisors, whose sum is σ = 12423162. Its totient is φ = 12423160.

The previous prime is 12423149. The next prime is 12423167. The reversal of 12423161 is 16132421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 32761 = 3520^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 12423161 - 2⁶ = 12423097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12423167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211580 + 6211581.

It is an arithmetic number, because the mean of its divisors is an integer number (6211581).

Almost surely, 2^12423161 is an apocalyptic number.

It is an amenable number.

12423161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423161 is an equidigital number, since it uses as much as digits as its factorization.

12423161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 12423161 is about 3524.6504791256. The cubic root of 12423161 is about 231.6029238795.

Adding to 12423161 its reverse (16132421), we get a palindrome (28555582).

The spelling of 12423161 in words is "twelve million, four hundred twenty-three thousand, one hundred sixty-one".