12421303439 has 2 divisors, whose sum is σ = 12421303440. Its totient is φ = 12421303438.

The previous prime is 12421303373. The next prime is 12421303441. The reversal of 12421303439 is 93430312421.

12421303439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12421303439 - 2²⁸ = 12152867983 is a prime.

Together with 12421303441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421303039) 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, 6210651719 + 6210651720.

It is an arithmetic number, because the mean of its divisors is an integer number (6210651720).

Almost surely, 2^12421303439 is an apocalyptic number.

12421303439 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421303439 is an equidigital number, since it uses as much as digits as its factorization.

12421303439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 12421303439 in words is "twelve billion, four hundred twenty-one million, three hundred three thousand, four hundred thirty-nine".