242171 has 2 divisors, whose sum is σ = 242172. Its totient is φ = 242170.

The previous prime is 242161. The next prime is 242173. The reversal of 242171 is 171242.

242171 is nontrivially palindromic in base 12.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242171 is a prime.

Together with 242173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121085 + 121086.

It is an arithmetic number, because the mean of its divisors is an integer number (121086).

2²⁴²¹⁷¹ is an apocalyptic number.

242171 is a deficient number, since it is larger than the sum of its proper divisors (1).

242171 is an equidigital number, since it uses as much as digits as its factorization.

242171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112, while the sum is 17.

The square root of 242171 is about 492.1087278234. The cubic root of 242171 is about 62.3314713111.

The spelling of 242171 in words is "two hundred forty-two thousand, one hundred seventy-one", and thus it is an iban number.