43133943 has 4 divisors (see below), whose sum is σ = 57511928. Its totient is φ = 28755960.

The previous prime is 43133903. The next prime is 43133953. The reversal of 43133943 is 34933134.

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

It is not a de Polignac number, because 43133943 - 2²⁰ = 42085367 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 43133943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43133903) 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, 7188988 + ... + 7188993.

It is an arithmetic number, because the mean of its divisors is an integer number (14377982).

Almost surely, 2^43133943 is an apocalyptic number.

43133943 is a deficient number, since it is larger than the sum of its proper divisors (14377985).

43133943 is a wasteful number, since it uses less digits than its factorization.

43133943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14377984.

The product of its digits is 11664, while the sum is 30.

The square root of 43133943 is about 6567.6436413679. The cubic root of 43133943 is about 350.7031930552.

It can be divided in two parts, 4313 and 3943, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 43133943 in words is "forty-three million, one hundred thirty-three thousand, nine hundred forty-three".