242791148129 has 2 divisors, whose sum is σ = 242791148130. Its totient is φ = 242791148128.

The previous prime is 242791148107. The next prime is 242791148189. The reversal of 242791148129 is 921841197242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122253723904 + 120537424225 = 349648^2 + 347185^2 .

It is a cyclic number.

It is not a de Polignac number, because 242791148129 - 2¹² = 242791144033 is a prime.

It is not a weakly prime, because it can be changed into another prime (242791148189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121395574064 + 121395574065.

It is an arithmetic number, because the mean of its divisors is an integer number (121395574065).

Almost surely, 2^242791148129 is an apocalyptic number.

It is an amenable number.

242791148129 is a deficient number, since it is larger than the sum of its proper divisors (1).

242791148129 is an equidigital number, since it uses as much as digits as its factorization.

242791148129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The spelling of 242791148129 in words is "two hundred forty-two billion, seven hundred ninety-one million, one hundred forty-eight thousand, one hundred twenty-nine".