42166 has 8 divisors (see below), whose sum is σ = 65520. Its totient is φ = 20328.

The previous prime is 42157. The next prime is 42169. The reversal of 42166 is 66124.

42166 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.

It is a plaindrome in base 8.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306 + ... + 421.

It is an arithmetic number, because the mean of its divisors is an integer number (8190).

2⁴²¹⁶⁶ is an apocalyptic number.

42166 is a deficient number, since it is larger than the sum of its proper divisors (23354).

42166 is a wasteful number, since it uses less digits than its factorization.

42166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its digits is 288, while the sum is 19.

The square root of 42166 is about 205.3436144612. The cubic root of 42166 is about 34.8060015192.

The spelling of 42166 in words is "forty-two thousand, one hundred sixty-six".