1111055243 has 2 divisors, whose sum is σ = 1111055244. Its totient is φ = 1111055242.

The previous prime is 1111055237. The next prime is 1111055261. The reversal of 1111055243 is 3425501111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111055243 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1111055233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555527621 + 555527622.

It is an arithmetic number, because the mean of its divisors is an integer number (555527622).

Almost surely, 2^1111055243 is an apocalyptic number.

1111055243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111055243 is an equidigital number, since it uses as much as digits as its factorization.

1111055243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1111055243 is about 33332.4953011322. The cubic root of 1111055243 is about 1035.7268088392.

Adding to 1111055243 its reverse (3425501111), we get a palindrome (4536556354).

The spelling of 1111055243 in words is "one billion, one hundred eleven million, fifty-five thousand, two hundred forty-three".