1105442543 has 2 divisors, whose sum is σ = 1105442544. Its totient is φ = 1105442542.

The previous prime is 1105442531. The next prime is 1105442563. The reversal of 1105442543 is 3452445011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1105442543 - 2¹⁴ = 1105426159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105442563) 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, 552721271 + 552721272.

It is an arithmetic number, because the mean of its divisors is an integer number (552721272).

Almost surely, 2^1105442543 is an apocalyptic number.

1105442543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105442543 is an equidigital number, since it uses as much as digits as its factorization.

1105442543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1105442543 is about 33248.1960864044. The cubic root of 1105442543 is about 1033.9798089133.

Adding to 1105442543 its reverse (3452445011), we get a palindrome (4557887554).

The spelling of 1105442543 in words is "one billion, one hundred five million, four hundred forty-two thousand, five hundred forty-three".