1318123 has 4 divisors (see below), whose sum is σ = 1334088. Its totient is φ = 1302160.

The previous prime is 1318103. The next prime is 1318139. The reversal of 1318123 is 3218131.

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 1318123 - 2¹⁷ = 1187051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1318123.

It is not an unprimeable number, because it can be changed into a prime (1318103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7858 + ... + 8023.

It is an arithmetic number, because the mean of its divisors is an integer number (333522).

2^1318123 is an apocalyptic number.

1318123 is a deficient number, since it is larger than the sum of its proper divisors (15965).

1318123 is an equidigital number, since it uses as much as digits as its factorization.

1318123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15964.

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

The square root of 1318123 is about 1148.0953793131. The cubic root of 1318123 is about 109.6441115261.

It can be divided in two parts, 1318 and 123, that added together give a palindrome (1441).

The spelling of 1318123 in words is "one million, three hundred eighteen thousand, one hundred twenty-three".