166242 has 16 divisors (see below), whose sum is σ = 336960. Its totient is φ = 54672.

The previous prime is 166237. The next prime is 166247. The reversal of 166242 is 242661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166237) and next prime (166247).

It is not an unprimeable number, because it can be changed into a prime (166247) by changing a digit.

166242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484 + ... + 752.

It is an arithmetic number, because the mean of its divisors is an integer number (21060).

2¹⁶⁶²⁴² is an apocalyptic number.

166242 is an abundant number, since it is smaller than the sum of its proper divisors (170718).

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

166242 is a wasteful number, since it uses less digits than its factorization.

166242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

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

The square root of 166242 is about 407.7278504100. The cubic root of 166242 is about 54.9853404456.

The spelling of 166242 in words is "one hundred sixty-six thousand, two hundred forty-two".