1115142043 has 2 divisors, whose sum is σ = 1115142044. Its totient is φ = 1115142042.

The previous prime is 1115142029. The next prime is 1115142073. The reversal of 1115142043 is 3402415111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115142043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115142023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557571021 + 557571022.

It is an arithmetic number, because the mean of its divisors is an integer number (557571022).

Almost surely, 2^1115142043 is an apocalyptic number.

1115142043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115142043 is an equidigital number, since it uses as much as digits as its factorization.

1115142043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1115142043 is about 33393.7425725240. The cubic root of 1115142043 is about 1036.9951613282.

Adding to 1115142043 its reverse (3402415111), we get a palindrome (4517557154).

The spelling of 1115142043 in words is "one billion, one hundred fifteen million, one hundred forty-two thousand, forty-three".