242872055917 has 2 divisors, whose sum is σ = 242872055918. Its totient is φ = 242872055916.

The previous prime is 242872055887. The next prime is 242872055927. The reversal of 242872055917 is 719550278242.

242872055917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221143527081 + 21728528836 = 470259^2 + 147406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242872055917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242872055927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121436027958 + 121436027959.

It is an arithmetic number, because the mean of its divisors is an integer number (121436027959).

Almost surely, 2^242872055917 is an apocalyptic number.

It is an amenable number.

242872055917 is a deficient number, since it is larger than the sum of its proper divisors (1).

242872055917 is an equidigital number, since it uses as much as digits as its factorization.

242872055917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 242872055917 in words is "two hundred forty-two billion, eight hundred seventy-two million, fifty-five thousand, nine hundred seventeen".