1157442043 has 2 divisors, whose sum is σ = 1157442044. Its totient is φ = 1157442042.

The previous prime is 1157442017. The next prime is 1157442053. The reversal of 1157442043 is 3402447511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1157442043 - 2⁹ = 1157441531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1157441996 and 1157442014.

It is not a weakly prime, because it can be changed into another prime (1157442053) 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, 578721021 + 578721022.

It is an arithmetic number, because the mean of its divisors is an integer number (578721022).

Almost surely, 2^1157442043 is an apocalyptic number.

1157442043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157442043 is an equidigital number, since it uses as much as digits as its factorization.

1157442043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1157442043 is about 34021.1999053531. The cubic root of 1157442043 is about 1049.9446812882.

Adding to 1157442043 its reverse (3402447511), we get a palindrome (4559889554).

The spelling of 1157442043 in words is "one billion, one hundred fifty-seven million, four hundred forty-two thousand, forty-three".