243440242379 has 2 divisors, whose sum is σ = 243440242380. Its totient is φ = 243440242378.

The previous prime is 243440242373. The next prime is 243440242429. The reversal of 243440242379 is 973242044342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243440242379 is a prime.

It is not a weakly prime, because it can be changed into another prime (243440242373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121720121189 + 121720121190.

It is an arithmetic number, because the mean of its divisors is an integer number (121720121190).

Almost surely, 2^243440242379 is an apocalyptic number.

243440242379 is a deficient number, since it is larger than the sum of its proper divisors (1).

243440242379 is an equidigital number, since it uses as much as digits as its factorization.

243440242379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 44.

The spelling of 243440242379 in words is "two hundred forty-three billion, four hundred forty million, two hundred forty-two thousand, three hundred seventy-nine".