166141 has 8 divisors (see below), whose sum is σ = 182520. Its totient is φ = 150528.

The previous prime is 166099. The next prime is 166147. The reversal of 166141 is 141661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29241 + 136900 = 171^2 + 370^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 166141 - 2⁷ = 166013 is a prime.

It is an Ulam number.

It is a Duffinian number.

166141 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (22815).

2¹⁶⁶¹⁴¹ is an apocalyptic number.

It is an amenable number.

166141 is a deficient number, since it is larger than the sum of its proper divisors (16379).

166141 is a wasteful number, since it uses less digits than its factorization.

166141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383.

The product of its digits is 144, while the sum is 19.

The square root of 166141 is about 407.6039744654. The cubic root of 166141 is about 54.9742027780.

The spelling of 166141 in words is "one hundred sixty-six thousand, one hundred forty-one".