242122253189 has 2 divisors, whose sum is σ = 242122253190. Its totient is φ = 242122253188.

The previous prime is 242122253183. The next prime is 242122253203. The reversal of 242122253189 is 981352221242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220735530625 + 21386722564 = 469825^2 + 146242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242122253189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242122253183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121061126594 + 121061126595.

It is an arithmetic number, because the mean of its divisors is an integer number (121061126595).

Almost surely, 2^242122253189 is an apocalyptic number.

It is an amenable number.

242122253189 is a deficient number, since it is larger than the sum of its proper divisors (1).

242122253189 is an equidigital number, since it uses as much as digits as its factorization.

242122253189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The spelling of 242122253189 in words is "two hundred forty-two billion, one hundred twenty-two million, two hundred fifty-three thousand, one hundred eighty-nine".