1109123 has 2 divisors, whose sum is σ = 1109124. Its totient is φ = 1109122.

The previous prime is 1109117. The next prime is 1109159. The reversal of 1109123 is 3219011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1109123 - 2⁸ = 1108867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554561 + 554562.

It is an arithmetic number, because the mean of its divisors is an integer number (554562).

2^1109123 is an apocalyptic number.

1109123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109123 is an equidigital number, since it uses as much as digits as its factorization.

1109123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1109123 is about 1053.1490872616. The cubic root of 1109123 is about 103.5126047490.

The spelling of 1109123 in words is "one million, one hundred nine thousand, one hundred twenty-three".