1006243543 has 2 divisors, whose sum is σ = 1006243544. Its totient is φ = 1006243542.

The previous prime is 1006243541. The next prime is 1006243631. The reversal of 1006243543 is 3453426001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1006243543 - 2¹ = 1006243541 is a prime.

Together with 1006243541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006243541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503121771 + 503121772.

It is an arithmetic number, because the mean of its divisors is an integer number (503121772).

Almost surely, 2^1006243543 is an apocalyptic number.

1006243543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006243543 is an equidigital number, since it uses as much as digits as its factorization.

1006243543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1006243543 is about 31721.3420743827. The cubic root of 1006243543 is about 1002.0768646471.

Adding to 1006243543 its reverse (3453426001), we get a palindrome (4459669544).

The spelling of 1006243543 in words is "one billion, six million, two hundred forty-three thousand, five hundred forty-three".