13042343 has 4 divisors (see below), whose sum is σ = 13049808. Its totient is φ = 13034880.

The previous prime is 13042339. The next prime is 13042409. The reversal of 13042343 is 34324031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 34324031 = 7 ⋅4903433.

It is a cyclic number.

It is not a de Polignac number, because 13042343 - 2² = 13042339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042313) 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 in 3 ways as a sum of consecutive naturals, for example, 455 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (3262452).

Almost surely, 2^13042343 is an apocalyptic number.

13042343 is a deficient number, since it is larger than the sum of its proper divisors (7465).

13042343 is an equidigital number, since it uses as much as digits as its factorization.

13042343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7464.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 13042343 is about 3611.4184194025. The cubic root of 13042343 is about 235.3884807285.

Adding to 13042343 its reverse (34324031), we get a palindrome (47366374).

The spelling of 13042343 in words is "thirteen million, forty-two thousand, three hundred forty-three".