12420428323 has 2 divisors, whose sum is σ = 12420428324. Its totient is φ = 12420428322.

The previous prime is 12420428281. The next prime is 12420428347. The reversal of 12420428323 is 32382402421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12420428323 is a prime.

It is not a weakly prime, because it can be changed into another prime (12420420323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210214161 + 6210214162.

It is an arithmetic number, because the mean of its divisors is an integer number (6210214162).

Almost surely, 2^12420428323 is an apocalyptic number.

12420428323 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420428323 is an equidigital number, since it uses as much as digits as its factorization.

12420428323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 12420428323 in words is "twelve billion, four hundred twenty million, four hundred twenty-eight thousand, three hundred twenty-three".