242166 has 8 divisors (see below), whose sum is σ = 484344. Its totient is φ = 80720.

The previous prime is 242161. The next prime is 242171. The reversal of 242166 is 661242.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (242161) and next prime (242171).

It is a sphenic number, since it is the product of 3 distinct primes.

242166 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242166.

It is not an unprimeable number, because it can be changed into a prime (242161) by changing a digit.

242166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20175 + ... + 20186.

It is an arithmetic number, because the mean of its divisors is an integer number (60543).

2²⁴²¹⁶⁶ is an apocalyptic number.

242166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242166 is a wasteful number, since it uses less digits than its factorization.

242166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40366.

The product of its digits is 576, while the sum is 21.

The square root of 242166 is about 492.1036476191. The cubic root of 242166 is about 62.3310423311.

It can be divided in two parts, 24 and 2166, that multiplied together give a square (51984 = 228²).

The spelling of 242166 in words is "two hundred forty-two thousand, one hundred sixty-six".