1123340045 has 8 divisors (see below), whose sum is σ = 1348605720. Its totient is φ = 898273600.

The previous prime is 1123339993. The next prime is 1123340047. The reversal of 1123340045 is 5400433211.

It can be written as a sum of positive squares in 4 ways, for example, as 20967241 + 1102372804 = 4579^2 + 33202^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123340045 - 2²⁴ = 1106562829 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123340045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123340047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37106 + ... + 60195.

It is an arithmetic number, because the mean of its divisors is an integer number (168575715).

Almost surely, 2^1123340045 is an apocalyptic number.

It is an amenable number.

1123340045 is a deficient number, since it is larger than the sum of its proper divisors (225265675).

1123340045 is an equidigital number, since it uses as much as digits as its factorization.

1123340045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99615.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1123340045 is about 33516.2653796631. The cubic root of 1123340045 is about 1039.5301270551.

Adding to 1123340045 its reverse (5400433211), we get a palindrome (6523773256).

The spelling of 1123340045 in words is "one billion, one hundred twenty-three million, three hundred forty thousand, forty-five".