180123 has 4 divisors (see below), whose sum is σ = 240168. Its totient is φ = 120080.

The previous prime is 180097. The next prime is 180137. The reversal of 180123 is 321081.

It is a happy number.

180123 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 180123 - 2¹⁰ = 179099 is a prime.

It is a D-number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (180023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30018 + ... + 30023.

It is an arithmetic number, because the mean of its divisors is an integer number (60042).

2¹⁸⁰¹²³ is an apocalyptic number.

180123 is a deficient number, since it is larger than the sum of its proper divisors (60045).

180123 is an equidigital number, since it uses as much as digits as its factorization.

180123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60044.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 180123 is about 424.4090008471. The cubic root of 180123 is about 56.4750196303.

It can be divided in two parts, 180 and 123, that added together give a palindrome (303).

The spelling of 180123 in words is "one hundred eighty thousand, one hundred twenty-three".