2043943 has 4 divisors (see below), whose sum is σ = 2229768. Its totient is φ = 1858120.

The previous prime is 2043931. The next prime is 2043953. The reversal of 2043943 is 3493402.

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

It is not a de Polignac number, because 2043943 - 2⁵ = 2043911 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 (2043953) 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, 92896 + ... + 92917.

It is an arithmetic number, because the mean of its divisors is an integer number (557442).

2^2043943 is an apocalyptic number.

2043943 is a deficient number, since it is larger than the sum of its proper divisors (185825).

2043943 is a wasteful number, since it uses less digits than its factorization.

2043943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185824.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 2043943 is about 1429.6653454568. The cubic root of 2043943 is about 126.9081734379.

The spelling of 2043943 in words is "two million, forty-three thousand, nine hundred forty-three".