1123142263 has 2 divisors, whose sum is σ = 1123142264. Its totient is φ = 1123142262.

The previous prime is 1123142261. The next prime is 1123142341. The reversal of 1123142263 is 3622413211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123142263 - 2¹ = 1123142261 is a prime.

It is a super-2 number, since 2×1123142263² = 2522897085873522338, which contains 22 as substring.

Together with 1123142261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123142261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561571131 + 561571132.

It is an arithmetic number, because the mean of its divisors is an integer number (561571132).

Almost surely, 2^1123142263 is an apocalyptic number.

1123142263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123142263 is an equidigital number, since it uses as much as digits as its factorization.

1123142263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 1123142263 is about 33513.3147122155. The cubic root of 1123142263 is about 1039.4691148335.

Adding to 1123142263 its reverse (3622413211), we get a palindrome (4745555474).

The spelling of 1123142263 in words is "one billion, one hundred twenty-three million, one hundred forty-two thousand, two hundred sixty-three".