1123123241 has 4 divisors (see below), whose sum is σ = 1189189332. Its totient is φ = 1057057152.

The previous prime is 1123123237. The next prime is 1123123279. The reversal of 1123123241 is 1423213211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1423213211 = 7 ⋅203316173.

It can be written as a sum of positive squares in 2 ways, for example, as 1037097616 + 86025625 = 32204^2 + 9275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123123241 - 2² = 1123123237 is a prime.

It is a super-2 number, since 2×1123123241² = 2522811628948688162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123120241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33033020 + ... + 33033053.

It is an arithmetic number, because the mean of its divisors is an integer number (297297333).

Almost surely, 2^1123123241 is an apocalyptic number.

It is an amenable number.

1123123241 is a deficient number, since it is larger than the sum of its proper divisors (66066091).

1123123241 is an equidigital number, since it uses as much as digits as its factorization.

1123123241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66066090.

The product of its digits is 288, while the sum is 20.

The square root of 1123123241 is about 33513.0309133626. The cubic root of 1123123241 is about 1039.4632465080.

Adding to 1123123241 its reverse (1423213211), we get a palindrome (2546336452).

The spelling of 1123123241 in words is "one billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred forty-one".