166123 has 4 divisors (see below), whose sum is σ = 167008. Its totient is φ = 165240.

The previous prime is 166099. The next prime is 166147. The reversal of 166123 is 321661.

166123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (166099) and next prime (166147).

It is a cyclic number.

It is not a de Polignac number, because 166123 - 2⁹ = 165611 is a prime.

It is a super-2 number, since 2×166123² = 55193702258, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 166123.

It is not an unprimeable number, because it can be changed into a prime (166183) 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, 36 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (41752).

2¹⁶⁶¹²³ is an apocalyptic number.

166123 is a deficient number, since it is larger than the sum of its proper divisors (885).

166123 is an equidigital number, since it uses as much as digits as its factorization.

166123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its digits is 216, while the sum is 19.

The square root of 166123 is about 407.5818936116. The cubic root of 166123 is about 54.9722173732.

Adding to 166123 its reverse (321661), we get a palindrome (487784).

It can be divided in two parts, 166 and 123, that added together give a square (289 = 17²).

The spelling of 166123 in words is "one hundred sixty-six thousand, one hundred twenty-three".