242144243197 has 2 divisors, whose sum is σ = 242144243198. Its totient is φ = 242144243196.

The previous prime is 242144243161. The next prime is 242144243227. The reversal of 242144243197 is 791342441242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198618183556 + 43526059641 = 445666^2 + 208629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242144243197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242144244197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121072121598 + 121072121599.

It is an arithmetic number, because the mean of its divisors is an integer number (121072121599).

Almost surely, 2^242144243197 is an apocalyptic number.

It is an amenable number.

242144243197 is a deficient number, since it is larger than the sum of its proper divisors (1).

242144243197 is an equidigital number, since it uses as much as digits as its factorization.

242144243197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 43.

The spelling of 242144243197 in words is "two hundred forty-two billion, one hundred forty-four million, two hundred forty-three thousand, one hundred ninety-seven".