It is a happy number.
166642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
166642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2166642 is an apocalyptic number.
166642 is a wasteful number, since it uses less digits than its factorization.
166642 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11912.
The square root of 166642 is about 408.2180789725. The cubic root of 166642 is about 55.0294057630.
The spelling of 166642 in words is "one hundred sixty-six thousand, six hundred forty-two".