12295421 has 2 divisors, whose sum is σ = 12295422. Its totient is φ = 12295420.

The previous prime is 12295411. The next prime is 12295441. The reversal of 12295421 is 12459221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11323225 + 972196 = 3365^2 + 986^2 .

It is an emirp because it is prime and its reverse (12459221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12295421 - 2¹⁸ = 12033277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12295411) 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, 6147710 + 6147711.

It is an arithmetic number, because the mean of its divisors is an integer number (6147711).

Almost surely, 2^12295421 is an apocalyptic number.

It is an amenable number.

12295421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12295421 is an equidigital number, since it uses as much as digits as its factorization.

12295421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 12295421 is about 3506.4827106375. The cubic root of 12295421 is about 230.8063756077.

The spelling of 12295421 in words is "twelve million, two hundred ninety-five thousand, four hundred twenty-one".