166041 has 12 divisors (see below), whose sum is σ = 252720. Its totient is φ = 104760.

The previous prime is 166031. The next prime is 166043. The reversal of 166041 is 140661.

166041 is a `hidden beast` number, since 1 + 660 + 4 + 1 = 666.

It is not a de Polignac number, because 166041 - 2¹¹ = 163993 is a prime.

It is a super-2 number, since 2×166041² = 55139227362, which contains 22 as substring.

166041 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (166043) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 315 + ... + 656.

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

2¹⁶⁶⁰⁴¹ is an apocalyptic number.

It is an amenable number.

166041 is a deficient number, since it is larger than the sum of its proper divisors (86679).

166041 is a wasteful number, since it uses less digits than its factorization.

166041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 166041 is about 407.4812879139. The cubic root of 166041 is about 54.9631709363.

The spelling of 166041 in words is "one hundred sixty-six thousand, forty-one".