12723443 has 2 divisors, whose sum is σ = 12723444. Its totient is φ = 12723442.

The previous prime is 12723433. The next prime is 12723457. The reversal of 12723443 is 34432721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12723443 - 2⁶ = 12723379 is a prime.

It is not a weakly prime, because it can be changed into another prime (12723433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361721 + 6361722.

It is an arithmetic number, because the mean of its divisors is an integer number (6361722).

Almost surely, 2^12723443 is an apocalyptic number.

12723443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723443 is an equidigital number, since it uses as much as digits as its factorization.

12723443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 26.

The square root of 12723443 is about 3566.9935519987. The cubic root of 12723443 is about 233.4541236272.

The spelling of 12723443 in words is "twelve million, seven hundred twenty-three thousand, four hundred forty-three".