1006542443 has 4 divisors (see below), whose sum is σ = 1065750840. Its totient is φ = 947334048.

The previous prime is 1006542403. The next prime is 1006542463. The reversal of 1006542443 is 3442456001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3442456001 = 1873 ⋅1837937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1006542443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006542403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29604173 + ... + 29604206.

It is an arithmetic number, because the mean of its divisors is an integer number (266437710).

Almost surely, 2^1006542443 is an apocalyptic number.

1006542443 is a deficient number, since it is larger than the sum of its proper divisors (59208397).

1006542443 is an equidigital number, since it uses as much as digits as its factorization.

1006542443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59208396.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1006542443 is about 31726.0530636888. The cubic root of 1006542443 is about 1002.1760755936.

Adding to 1006542443 its reverse (3442456001), we get a palindrome (4448998444).

The spelling of 1006542443 in words is "one billion, six million, five hundred forty-two thousand, four hundred forty-three".