242515704251 has 2 divisors, whose sum is σ = 242515704252. Its totient is φ = 242515704250.

The previous prime is 242515704187. The next prime is 242515704281. The reversal of 242515704251 is 152407515242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242515704251 - 2⁶ = 242515704187 is a prime.

It is not a weakly prime, because it can be changed into another prime (242515704281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121257852125 + 121257852126.

It is an arithmetic number, because the mean of its divisors is an integer number (121257852126).

Almost surely, 2^242515704251 is an apocalyptic number.

242515704251 is a deficient number, since it is larger than the sum of its proper divisors (1).

242515704251 is an equidigital number, since it uses as much as digits as its factorization.

242515704251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112000, while the sum is 38.

The spelling of 242515704251 in words is "two hundred forty-two billion, five hundred fifteen million, seven hundred four thousand, two hundred fifty-one".