242173 has 2 divisors, whose sum is σ = 242174. Its totient is φ = 242172.

The previous prime is 242171. The next prime is 242197. The reversal of 242173 is 371242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228484 + 13689 = 478^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 242173 - 2¹ = 242171 is a prime.

Together with 242171, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 242173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242171) 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, 121086 + 121087.

It is an arithmetic number, because the mean of its divisors is an integer number (121087).

2²⁴²¹⁷³ is an apocalyptic number.

It is an amenable number.

242173 is a deficient number, since it is larger than the sum of its proper divisors (1).

242173 is an equidigital number, since it uses as much as digits as its factorization.

242173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 19.

The square root of 242173 is about 492.1107598905. The cubic root of 242173 is about 62.3316429014.

It can be divided in two parts, 24 and 2173, that added together give a cube (2197 = 13³).

The spelling of 242173 in words is "two hundred forty-two thousand, one hundred seventy-three", and thus it is an iban number.