13042443 has 4 divisors (see below), whose sum is σ = 17389928. Its totient is φ = 8694960.

The previous prime is 13042441. The next prime is 13042457. The reversal of 13042443 is 34424031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13042443 - 2¹ = 13042441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13042441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173738 + ... + 2173743.

It is an arithmetic number, because the mean of its divisors is an integer number (4347482).

Almost surely, 2^13042443 is an apocalyptic number.

13042443 is a deficient number, since it is larger than the sum of its proper divisors (4347485).

13042443 is an equidigital number, since it uses as much as digits as its factorization.

13042443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347484.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 13042443 is about 3611.4322643516. The cubic root of 13042443 is about 235.3890823276.

Adding to 13042443 its reverse (34424031), we get a palindrome (47466474).

The spelling of 13042443 in words is "thirteen million, forty-two thousand, four hundred forty-three".