1120205545 has 4 divisors (see below), whose sum is σ = 1344246660. Its totient is φ = 896164432.

The previous prime is 1120205539. The next prime is 1120205549. The reversal of 1120205545 is 5455020211.

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 854743696 + 265461849 = 29236^2 + 16293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120205545 - 2²⁷ = 985987817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120205549) 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, 112020550 + ... + 112020559.

It is an arithmetic number, because the mean of its divisors is an integer number (336061665).

Almost surely, 2^1120205545 is an apocalyptic number.

It is an amenable number.

1120205545 is a deficient number, since it is larger than the sum of its proper divisors (224041115).

1120205545 is an equidigital number, since it uses as much as digits as its factorization.

1120205545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224041114.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1120205545 is about 33469.4718362869. The cubic root of 1120205545 is about 1038.5623457224.

Adding to 1120205545 its reverse (5455020211), we get a palindrome (6575225756).

The spelling of 1120205545 in words is "one billion, one hundred twenty million, two hundred five thousand, five hundred forty-five".