1120545209 has 4 divisors (see below), whose sum is σ = 1280623104. Its totient is φ = 960467316.

The previous prime is 1120545193. The next prime is 1120545227. The reversal of 1120545209 is 9025450211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1120545209 - 2⁴ = 1120545193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123545209) 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, 80038937 + ... + 80038950.

It is an arithmetic number, because the mean of its divisors is an integer number (320155776).

Almost surely, 2^1120545209 is an apocalyptic number.

It is an amenable number.

1120545209 is a deficient number, since it is larger than the sum of its proper divisors (160077895).

1120545209 is an equidigital number, since it uses as much as digits as its factorization.

1120545209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160077894.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1120545209 is about 33474.5456877311. The cubic root of 1120545209 is about 1038.6673046125.

The spelling of 1120545209 in words is "one billion, one hundred twenty million, five hundred forty-five thousand, two hundred nine".