2143004243 has 4 divisors (see below), whose sum is σ = 2255793960. Its totient is φ = 2030214528.

The previous prime is 2143004233. The next prime is 2143004249. The reversal of 2143004243 is 3424003412.

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 2143004243 - 2¹⁴ = 2142987859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143004249) 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, 56394830 + ... + 56394867.

It is an arithmetic number, because the mean of its divisors is an integer number (563948490).

Almost surely, 2^2143004243 is an apocalyptic number.

2143004243 is a deficient number, since it is larger than the sum of its proper divisors (112789717).

2143004243 is a wasteful number, since it uses less digits than its factorization.

2143004243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112789716.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2143004243 is about 46292.5938244985. The cubic root of 2143004243 is about 1289.2614892358.

Adding to 2143004243 its reverse (3424003412), we get a palindrome (5567007655).

The spelling of 2143004243 in words is "two billion, one hundred forty-three million, four thousand, two hundred forty-three".