242444420173 has 2 divisors, whose sum is σ = 242444420174. Its totient is φ = 242444420172.

The previous prime is 242444420171. The next prime is 242444420191. The reversal of 242444420173 is 371024444242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232620042249 + 9824377924 = 482307^2 + 99118^2 .

It is a cyclic number.

It is not a de Polignac number, because 242444420173 - 2¹ = 242444420171 is a prime.

Together with 242444420171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242444420171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121222210086 + 121222210087.

It is an arithmetic number, because the mean of its divisors is an integer number (121222210087).

Almost surely, 2^242444420173 is an apocalyptic number.

It is an amenable number.

242444420173 is a deficient number, since it is larger than the sum of its proper divisors (1).

242444420173 is an equidigital number, since it uses as much as digits as its factorization.

242444420173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 37.

The spelling of 242444420173 in words is "two hundred forty-two billion, four hundred forty-four million, four hundred twenty thousand, one hundred seventy-three".