109123 has 12 divisors (see below), whose sum is σ = 135432. Its totient is φ = 87360.

The previous prime is 109121. The next prime is 109133. The reversal of 109123 is 321901.

It is not a de Polignac number, because 109123 - 2¹ = 109121 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 109097 and 109106.

It is not an unprimeable number, because it can be changed into a prime (109121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 768 + ... + 898.

It is an arithmetic number, because the mean of its divisors is an integer number (11286).

2¹⁰⁹¹²³ is an apocalyptic number.

109123 is a deficient number, since it is larger than the sum of its proper divisors (26309).

109123 is a wasteful number, since it uses less digits than its factorization.

109123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 109123 is about 330.3377059919. The cubic root of 109123 is about 47.7865230471.

It can be divided in two parts, 109 and 123, that added together give a palindrome (232).

The spelling of 109123 in words is "one hundred nine thousand, one hundred twenty-three".