12423643 has 2 divisors, whose sum is σ = 12423644. Its totient is φ = 12423642.

The previous prime is 12423623. The next prime is 12423667. The reversal of 12423643 is 34632421.

12423643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12423643 is a prime.

It is not a weakly prime, because it can be changed into another prime (12423613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6211821 + 6211822.

It is an arithmetic number, because the mean of its divisors is an integer number (6211822).

Almost surely, 2^12423643 is an apocalyptic number.

12423643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12423643 is an equidigital number, since it uses as much as digits as its factorization.

12423643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

The square root of 12423643 is about 3524.7188540364. The cubic root of 12423643 is about 231.6059191227.

The spelling of 12423643 in words is "twelve million, four hundred twenty-three thousand, six hundred forty-three".