13040543 has 2 divisors, whose sum is σ = 13040544. Its totient is φ = 13040542.

The previous prime is 13040527. The next prime is 13040549. The reversal of 13040543 is 34504031.

It is a strong prime.

It is an emirp because it is prime and its reverse (34504031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13040543 - 2⁴ = 13040527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13040549) 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, 6520271 + 6520272.

It is an arithmetic number, because the mean of its divisors is an integer number (6520272).

Almost surely, 2^13040543 is an apocalyptic number.

13040543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13040543 is an equidigital number, since it uses as much as digits as its factorization.

13040543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13040543 is about 3611.1692012422. The cubic root of 13040543 is about 235.3776514177.

Adding to 13040543 its reverse (34504031), we get a palindrome (47544574).

The spelling of 13040543 in words is "thirteen million, forty thousand, five hundred forty-three".