243760427 has 2 divisors, whose sum is σ = 243760428. Its totient is φ = 243760426.

The previous prime is 243760397. The next prime is 243760441. The reversal of 243760427 is 724067342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243760427 - 2⁸ = 243760171 is a prime.

It is not a weakly prime, because it can be changed into another prime (243760487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121880213 + 121880214.

It is an arithmetic number, because the mean of its divisors is an integer number (121880214).

Almost surely, 2^243760427 is an apocalyptic number.

243760427 is a deficient number, since it is larger than the sum of its proper divisors (1).

243760427 is an equidigital number, since it uses as much as digits as its factorization.

243760427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 35.

The square root of 243760427 is about 15612.8289236768. The cubic root of 243760427 is about 624.6753958139.

The spelling of 243760427 in words is "two hundred forty-three million, seven hundred sixty thousand, four hundred twenty-seven".