4243040243 has 6 divisors (see below), whose sum is σ = 4594534884. Its totient is φ = 3916652376.

The previous prime is 4243040213. The next prime is 4243040281. The reversal of 4243040243 is 3420403424.

It is not a de Polignac number, because 4243040243 - 2¹⁰ = 4243039219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4243040203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12553205 + ... + 12553542.

It is an arithmetic number, because the mean of its divisors is an integer number (765755814).

Almost surely, 2^4243040243 is an apocalyptic number.

4243040243 is a deficient number, since it is larger than the sum of its proper divisors (351494641).

4243040243 is a wasteful number, since it uses less digits than its factorization.

4243040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25106773 (or 25106760 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 4243040243 is about 65138.6232814296. The cubic root of 4243040243 is about 1618.9212249661.

Adding to 4243040243 its reverse (3420403424), we get a palindrome (7663443667).

The spelling of 4243040243 in words is "four billion, two hundred forty-three million, forty thousand, two hundred forty-three".