1109120 has 32 divisors (see below), whose sum is σ = 2653020. Its totient is φ = 443392.

The previous prime is 1109117. The next prime is 1109123. The reversal of 1109120 is 219011.

It is an interprime number because it is at equal distance from previous prime (1109117) and next prime (1109123).

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 10816 = 1048^2 + 104^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1109095 and 1109104.

It is not an unprimeable number, because it can be changed into a prime (1109123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227 + ... + 1506.

2^1109120 is an apocalyptic number.

1109120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1109120 is an abundant number, since it is smaller than the sum of its proper divisors (1543900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1109120 is an equidigital number, since it uses as much as digits as its factorization.

1109120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1109120 is about 1053.1476629609. The cubic root of 1109120 is about 103.5125114205.

It can be divided in two parts, 11091 and 20, that added together give a palindrome (11111).

The spelling of 1109120 in words is "one million, one hundred nine thousand, one hundred twenty".