243942943 has 2 divisors, whose sum is σ = 243942944. Its totient is φ = 243942942.

The previous prime is 243942917. The next prime is 243942947. The reversal of 243942943 is 349249342.

It is a happy number.

243942943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243942943 - 2⁹ = 243942431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243942896 and 243942905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243942947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121971471 + 121971472.

It is an arithmetic number, because the mean of its divisors is an integer number (121971472).

Almost surely, 2^243942943 is an apocalyptic number.

243942943 is a deficient number, since it is larger than the sum of its proper divisors (1).

243942943 is an equidigital number, since it uses as much as digits as its factorization.

243942943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 40.

The square root of 243942943 is about 15618.6728949677. The cubic root of 243942943 is about 624.8312658101.

The spelling of 243942943 in words is "two hundred forty-three million, nine hundred forty-two thousand, nine hundred forty-three".