1123055243 has 4 divisors (see below), whose sum is σ = 1123127040. Its totient is φ = 1122983448.

The previous prime is 1123055221. The next prime is 1123055251. The reversal of 1123055243 is 3425503211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3425503211 = 13 ⋅263500247.

It is a cyclic number.

It is not a de Polignac number, because 1123055243 - 2²⁶ = 1055946379 is a prime.

It is a super-2 number, since 2×1123055243² = 2522506157659578098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123055203) 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, 1355 + ... + 47412.

It is an arithmetic number, because the mean of its divisors is an integer number (280781760).

Almost surely, 2^1123055243 is an apocalyptic number.

1123055243 is a deficient number, since it is larger than the sum of its proper divisors (71797).

1123055243 is an equidigital number, since it uses as much as digits as its factorization.

1123055243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71796.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1123055243 is about 33512.0163971075. The cubic root of 1123055243 is about 1039.4422684456.

Adding to 1123055243 its reverse (3425503211), we get a palindrome (4548558454).

The spelling of 1123055243 in words is "one billion, one hundred twenty-three million, fifty-five thousand, two hundred forty-three".