242222173 has 2 divisors, whose sum is σ = 242222174. Its totient is φ = 242222172.

The previous prime is 242222153. The next prime is 242222179. The reversal of 242222173 is 371222242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232318564 + 9903609 = 15242^2 + 3147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242222173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242222179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121111086 + 121111087.

It is an arithmetic number, because the mean of its divisors is an integer number (121111087).

Almost surely, 2^242222173 is an apocalyptic number.

It is an amenable number.

242222173 is a deficient number, since it is larger than the sum of its proper divisors (1).

242222173 is an equidigital number, since it uses as much as digits as its factorization.

242222173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 25.

The square root of 242222173 is about 15563.4884585687. The cubic root of 242222173 is about 623.3586140973.

The spelling of 242222173 in words is "two hundred forty-two million, two hundred twenty-two thousand, one hundred seventy-three".