12423401 has 2 divisors, whose sum is σ = 12423402. Its totient is φ = 12423400.

The previous prime is 12423377. The next prime is 12423407. The reversal of 12423401 is 10432421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10530025 + 1893376 = 3245^2 + 1376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12423401 is a prime.

It is a super-4 number, since 4×12423401⁴ (a number of 29 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12423401.

It is not a weakly prime, because it can be changed into another prime (12423407) 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 as a sum of consecutive naturals, namely, 6211700 + 6211701.

It is an arithmetic number, because the mean of its divisors is an integer number (6211701).

Almost surely, 2^12423401 is an apocalyptic number.

It is an amenable number.

12423401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423401 is an equidigital number, since it uses as much as digits as its factorization.

12423401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12423401 is about 3524.6845248901. The cubic root of 12423401 is about 231.6044152966.

Adding to 12423401 its reverse (10432421), we get a palindrome (22855822).

The spelling of 12423401 in words is "twelve million, four hundred twenty-three thousand, four hundred one".