242120515099 has 2 divisors, whose sum is σ = 242120515100. Its totient is φ = 242120515098.

The previous prime is 242120515081. The next prime is 242120515103. The reversal of 242120515099 is 990515021242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242120515099 - 2⁷ = 242120514971 is a prime.

It is not a weakly prime, because it can be changed into another prime (242120515699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060257549 + 121060257550.

It is an arithmetic number, because the mean of its divisors is an integer number (121060257550).

Almost surely, 2^242120515099 is an apocalyptic number.

242120515099 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120515099 is an equidigital number, since it uses as much as digits as its factorization.

242120515099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 242120515099 in words is "two hundred forty-two billion, one hundred twenty million, five hundred fifteen thousand, ninety-nine".