12420420319 has 2 divisors, whose sum is σ = 12420420320. Its totient is φ = 12420420318.

The previous prime is 12420420307. The next prime is 12420420323. The reversal of 12420420319 is 91302402421.

12420420319 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 an emirp because it is prime and its reverse (91302402421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12420420319 - 2⁷ = 12420420191 is a prime.

It is a super-2 number, since 2×12420420319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12420420119) 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, 6210210159 + 6210210160.

It is an arithmetic number, because the mean of its divisors is an integer number (6210210160).

Almost surely, 2^12420420319 is an apocalyptic number.

12420420319 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420420319 is an equidigital number, since it uses as much as digits as its factorization.

12420420319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 12420420319 in words is "twelve billion, four hundred twenty million, four hundred twenty thousand, three hundred nineteen".