It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a plaindrome in base 14.
It is a nialpdrome in base 16.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 4043.
24043 is an apocalyptic number.
4043 is a wasteful number, since it uses less digits than its factorization.
4043 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 324.
The square root of 4043 is about 63.5845893279. The cubic root of 4043 is about 15.9306897726.
Adding to 4043 its reverse (3404), we get a palindrome (7447).
The spelling of 4043 in words is "four thousand, forty-three", and thus it is an iban number.