1109045 has 8 divisors (see below), whose sum is σ = 1521024. Its totient is φ = 760464.

The previous prime is 1109033. The next prime is 1109057. The reversal of 1109045 is 5409011.

It is an interprime number because it is at equal distance from previous prime (1109033) and next prime (1109057).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1109045 - 2¹⁰ = 1108021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15809 + ... + 15878.

It is an arithmetic number, because the mean of its divisors is an integer number (190128).

2^1109045 is an apocalyptic number.

It is an amenable number.

1109045 is a deficient number, since it is larger than the sum of its proper divisors (411979).

1109045 is an equidigital number, since it uses as much as digits as its factorization.

1109045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31699.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1109045 is about 1053.1120548166. The cubic root of 1109045 is about 103.5101781553.

The spelling of 1109045 in words is "one million, one hundred nine thousand, forty-five".