12543329 has 2 divisors, whose sum is σ = 12543330. Its totient is φ = 12543328.

The previous prime is 12543319. The next prime is 12543337. The reversal of 12543329 is 92334521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9935104 + 2608225 = 3152^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 12543329 - 2¹⁶ = 12477793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12543319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271664 + 6271665.

It is an arithmetic number, because the mean of its divisors is an integer number (6271665).

Almost surely, 2^12543329 is an apocalyptic number.

It is an amenable number.

12543329 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543329 is an equidigital number, since it uses as much as digits as its factorization.

12543329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 12543329 is about 3541.6562509651. The cubic root of 12543329 is about 232.3472863103.

The spelling of 12543329 in words is "twelve million, five hundred forty-three thousand, three hundred twenty-nine".