242990312839 has 2 divisors, whose sum is σ = 242990312840. Its totient is φ = 242990312838.

The previous prime is 242990312809. The next prime is 242990312857. The reversal of 242990312839 is 938213099242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242990312839 - 2⁷ = 242990312711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242990312809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121495156419 + 121495156420.

It is an arithmetic number, because the mean of its divisors is an integer number (121495156420).

Almost surely, 2^242990312839 is an apocalyptic number.

242990312839 is a deficient number, since it is larger than the sum of its proper divisors (1).

242990312839 is an equidigital number, since it uses as much as digits as its factorization.

242990312839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 242990312839 in words is "two hundred forty-two billion, nine hundred ninety million, three hundred twelve thousand, eight hundred thirty-nine".