1123141265 has 4 divisors (see below), whose sum is σ = 1347769524. Its totient is φ = 898513008.

The previous prime is 1123141247. The next prime is 1123141277. The reversal of 1123141265 is 5621413211.

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 126855169 + 996286096 = 11263^2 + 31564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123141265 - 2²⁰ = 1122092689 is a prime.

It is a super-2 number, since 2×1123141265² = 2522892602291600450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112314122 + ... + 112314131.

It is an arithmetic number, because the mean of its divisors is an integer number (336942381).

Almost surely, 2^1123141265 is an apocalyptic number.

It is an amenable number.

1123141265 is a deficient number, since it is larger than the sum of its proper divisors (224628259).

1123141265 is an equidigital number, since it uses as much as digits as its factorization.

1123141265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224628258.

The product of its digits is 1440, while the sum is 26.

The square root of 1123141265 is about 33513.2998226077. The cubic root of 1123141265 is about 1039.4688069501.

Adding to 1123141265 its reverse (5621413211), we get a palindrome (6744554476).

The spelling of 1123141265 in words is "one billion, one hundred twenty-three million, one hundred forty-one thousand, two hundred sixty-five".