4043 has 4 divisors (see below), whose sum is σ = 4368. Its totient is φ = 3720.

The previous prime is 4027. The next prime is 4049. The reversal of 4043 is 3404.

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

It is a cyclic number.

It is not a de Polignac number, because 4043 - 2⁴ = 4027 is a prime.

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.

It is not an unprimeable number, because it can be changed into a prime (4049) 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, 143 + ... + 168.

It is an arithmetic number, because the mean of its divisors is an integer number (1092).

2⁴⁰⁴³ is an apocalyptic number.

4043 is a deficient number, since it is larger than the sum of its proper divisors (325).

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 product of its (nonzero) digits is 48, while the sum is 11.

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.