2018123 has 4 divisors (see below), whose sum is σ = 2124360. Its totient is φ = 1911888.

The previous prime is 2018117. The next prime is 2018153. The reversal of 2018123 is 3218102.

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 2018123 - 2¹² = 2014027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2018113) 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, 53090 + ... + 53127.

It is an arithmetic number, because the mean of its divisors is an integer number (531090).

2^2018123 is an apocalyptic number.

2018123 is a deficient number, since it is larger than the sum of its proper divisors (106237).

2018123 is a wasteful number, since it uses less digits than its factorization.

2018123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106236.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2018123 is about 1420.6065605930. The cubic root of 2018123 is about 126.3715204156.

The spelling of 2018123 in words is "two million, eighteen thousand, one hundred twenty-three".