242120545087 has 2 divisors, whose sum is σ = 242120545088. Its totient is φ = 242120545086.

The previous prime is 242120545081. The next prime is 242120545091. The reversal of 242120545087 is 780545021242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242120545087 - 2¹¹ = 242120543039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242120545081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060272543 + 121060272544.

It is an arithmetic number, because the mean of its divisors is an integer number (121060272544).

Almost surely, 2^242120545087 is an apocalyptic number.

242120545087 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120545087 is an equidigital number, since it uses as much as digits as its factorization.

242120545087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 179200, while the sum is 40.

The spelling of 242120545087 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, eighty-seven".