242138305159 has 2 divisors, whose sum is σ = 242138305160. Its totient is φ = 242138305158.

The previous prime is 242138305127. The next prime is 242138305181. The reversal of 242138305159 is 951503831242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242138305159 - 2⁵ = 242138305127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242138365159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121069152579 + 121069152580.

It is an arithmetic number, because the mean of its divisors is an integer number (121069152580).

Almost surely, 2^242138305159 is an apocalyptic number.

242138305159 is a deficient number, since it is larger than the sum of its proper divisors (1).

242138305159 is an equidigital number, since it uses as much as digits as its factorization.

242138305159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 242138305159 in words is "two hundred forty-two billion, one hundred thirty-eight million, three hundred five thousand, one hundred fifty-nine".