1105123 has 4 divisors (see below), whose sum is σ = 1112320. Its totient is φ = 1097928.

The previous prime is 1105109. The next prime is 1105141. The reversal of 1105123 is 3215011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105123 is a prime.

It is a super-4 number, since 4×1105123⁴ (a number of 25 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105163) 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, 3363 + ... + 3676.

It is an arithmetic number, because the mean of its divisors is an integer number (278080).

2^1105123 is an apocalyptic number.

1105123 is a deficient number, since it is larger than the sum of its proper divisors (7197).

1105123 is an equidigital number, since it uses as much as digits as its factorization.

1105123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1105123 is about 1051.2483055872. The cubic root of 1105123 is about 103.3880170733.

The spelling of 1105123 in words is "one million, one hundred five thousand, one hundred twenty-three".