1120909 has 4 divisors (see below), whose sum is σ = 1125180. Its totient is φ = 1116640.

The previous prime is 1120907. The next prime is 1120913. The reversal of 1120909 is 9090211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 476100 = 803^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120909 - 2¹ = 1120907 is a prime.

It is a Duffinian number.

1120909 is a modest number, since divided by 909 gives 112 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1120909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1714 + ... + 2275.

It is an arithmetic number, because the mean of its divisors is an integer number (281295).

2^1120909 is an apocalyptic number.

It is an amenable number.

1120909 is a deficient number, since it is larger than the sum of its proper divisors (4271).

1120909 is an equidigital number, since it uses as much as digits as its factorization.

1120909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1120909 is about 1058.7298994550. The cubic root of 1120909 is about 103.8779695417.

The spelling of 1120909 in words is "one million, one hundred twenty thousand, nine hundred nine".