242718173 has 2 divisors, whose sum is σ = 242718174. Its totient is φ = 242718172.

The previous prime is 242718167. The next prime is 242718193. The reversal of 242718173 is 371817242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160326244 + 82391929 = 12662^2 + 9077^2 .

It is a cyclic number.

It is not a de Polignac number, because 242718173 - 2⁶ = 242718109 is a prime.

It is a super-2 number, since 2×242718173² = 117824223008915858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242718193) 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, 121359086 + 121359087.

It is an arithmetic number, because the mean of its divisors is an integer number (121359087).

Almost surely, 2^242718173 is an apocalyptic number.

It is an amenable number.

242718173 is a deficient number, since it is larger than the sum of its proper divisors (1).

242718173 is an equidigital number, since it uses as much as digits as its factorization.

242718173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 35.

The square root of 242718173 is about 15579.4150403666. The cubic root of 242718173 is about 623.7838092364.

The spelling of 242718173 in words is "two hundred forty-two million, seven hundred eighteen thousand, one hundred seventy-three".