1123140443 has 2 divisors, whose sum is σ = 1123140444. Its totient is φ = 1123140442.

The previous prime is 1123140419. The next prime is 1123140467. The reversal of 1123140443 is 3440413211.

It is a balanced prime because it is at equal distance from previous prime (1123140419) and next prime (1123140467).

It is a cyclic number.

It is not a de Polignac number, because 1123140443 - 2¹² = 1123136347 is a prime.

It is a super-2 number, since 2×1123140443² = 2522888909404472498, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1123140643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561570221 + 561570222.

It is an arithmetic number, because the mean of its divisors is an integer number (561570222).

Almost surely, 2^1123140443 is an apocalyptic number.

1123140443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123140443 is an equidigital number, since it uses as much as digits as its factorization.

1123140443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1123140443 is about 33513.2875588176. The cubic root of 1123140443 is about 1039.4685533627.

Adding to 1123140443 its reverse (3440413211), we get a palindrome (4563553654).

The spelling of 1123140443 in words is "one billion, one hundred twenty-three million, one hundred forty thousand, four hundred forty-three".