242120724523 has 2 divisors, whose sum is σ = 242120724524. Its totient is φ = 242120724522.

The previous prime is 242120724499. The next prime is 242120724533. The reversal of 242120724523 is 325427021242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242120724523 - 2²¹ = 242118627371 is a prime.

It is not a weakly prime, because it can be changed into another prime (242120724533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060362261 + 121060362262.

It is an arithmetic number, because the mean of its divisors is an integer number (121060362262).

Almost surely, 2^242120724523 is an apocalyptic number.

242120724523 is a deficient number, since it is larger than the sum of its proper divisors (1).

242120724523 is an equidigital number, since it uses as much as digits as its factorization.

242120724523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 34.

Adding to 242120724523 its reverse (325427021242), we get a palindrome (567547745765).

The spelling of 242120724523 in words is "two hundred forty-two billion, one hundred twenty million, seven hundred twenty-four thousand, five hundred twenty-three".