1128247243 has 2 divisors, whose sum is σ = 1128247244. Its totient is φ = 1128247242.

The previous prime is 1128247229. The next prime is 1128247247. The reversal of 1128247243 is 3427428211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1128247243 - 2⁹ = 1128246731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1128247199 and 1128247208.

It is not a weakly prime, because it can be changed into another prime (1128247247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564123621 + 564123622.

It is an arithmetic number, because the mean of its divisors is an integer number (564123622).

Almost surely, 2^1128247243 is an apocalyptic number.

1128247243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128247243 is an equidigital number, since it uses as much as digits as its factorization.

1128247243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 1128247243 is about 33589.3918224192. The cubic root of 1128247243 is about 1041.0416225161.

The spelling of 1128247243 in words is "one billion, one hundred twenty-eight million, two hundred forty-seven thousand, two hundred forty-three".