1120442009 has 4 divisors (see below), whose sum is σ = 1124487204. Its totient is φ = 1116396816.

The previous prime is 1120441969. The next prime is 1120442039. The reversal of 1120442009 is 9002440211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9002440211 = 22549 ⋅399239.

It can be written as a sum of positive squares in 2 ways, for example, as 744198400 + 376243609 = 27280^2 + 19397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120442009 - 2¹⁶ = 1120376473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120442039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022182 + ... + 2022735.

It is an arithmetic number, because the mean of its divisors is an integer number (281121801).

Almost surely, 2^1120442009 is an apocalyptic number.

It is an amenable number.

1120442009 is a deficient number, since it is larger than the sum of its proper divisors (4045195).

1120442009 is an equidigital number, since it uses as much as digits as its factorization.

1120442009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045194.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1120442009 is about 33473.0041824752. The cubic root of 1120442009 is about 1038.6354172313.

The spelling of 1120442009 in words is "one billion, one hundred twenty million, four hundred forty-two thousand, nine".