242556655219 has 2 divisors, whose sum is σ = 242556655220. Its totient is φ = 242556655218.

The previous prime is 242556655183. The next prime is 242556655301. The reversal of 242556655219 is 912556655242.

242556655219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242556655219 - 2⁷ = 242556655091 is a prime.

It is a super-2 number, since 2×242556655219² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242556655919) 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, 121278327609 + 121278327610.

It is an arithmetic number, because the mean of its divisors is an integer number (121278327610).

Almost surely, 2^242556655219 is an apocalyptic number.

242556655219 is a deficient number, since it is larger than the sum of its proper divisors (1).

242556655219 is an equidigital number, since it uses as much as digits as its factorization.

242556655219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480000, while the sum is 52.

The spelling of 242556655219 in words is "two hundred forty-two billion, five hundred fifty-six million, six hundred fifty-five thousand, two hundred nineteen".