13042243 has 4 divisors (see below), whose sum is σ = 13049928. Its totient is φ = 13034560.

The previous prime is 13042207. The next prime is 13042259. The reversal of 13042243 is 34224031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13042243 - 2¹³ = 13034051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13042243.

It is not an unprimeable number, because it can be changed into a prime (13042273) 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, 46 + ... + 5107.

It is an arithmetic number, because the mean of its divisors is an integer number (3262482).

Almost surely, 2^13042243 is an apocalyptic number.

13042243 is a deficient number, since it is larger than the sum of its proper divisors (7685).

13042243 is an equidigital number, since it uses as much as digits as its factorization.

13042243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 13042243 is about 3611.4045744004. The cubic root of 13042243 is about 235.3878791262.

Adding to 13042243 its reverse (34224031), we get a palindrome (47266274).

The spelling of 13042243 in words is "thirteen million, forty-two thousand, two hundred forty-three".