12243401 has 2 divisors, whose sum is σ = 12243402. Its totient is φ = 12243400.

The previous prime is 12243389. The next prime is 12243403. The reversal of 12243401 is 10434221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 400 = 3499^2 + 20^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12243401 is a prime.

Together with 12243403, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12243401.

It is not a weakly prime, because it can be changed into another prime (12243403) 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, 6121700 + 6121701.

It is an arithmetic number, because the mean of its divisors is an integer number (6121701).

Almost surely, 2^12243401 is an apocalyptic number.

It is an amenable number.

12243401 is a deficient number, since it is larger than the sum of its proper divisors (1).

12243401 is an equidigital number, since it uses as much as digits as its factorization.

12243401 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 12243401 is about 3499.0571587215. The cubic root of 12243401 is about 230.4804136045.

Adding to 12243401 its reverse (10434221), we get a palindrome (22677622).

The spelling of 12243401 in words is "twelve million, two hundred forty-three thousand, four hundred one".