1012052543 has 4 divisors (see below), whose sum is σ = 1031147928. Its totient is φ = 992957160.

The previous prime is 1012052539. The next prime is 1012052557. The reversal of 1012052543 is 3452502101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012052543 - 2² = 1012052539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012052563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9547613 + ... + 9547718.

It is an arithmetic number, because the mean of its divisors is an integer number (257786982).

Almost surely, 2^1012052543 is an apocalyptic number.

1012052543 is a deficient number, since it is larger than the sum of its proper divisors (19095385).

1012052543 is an equidigital number, since it uses as much as digits as its factorization.

1012052543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19095384.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1012052543 is about 31812.7732679815. The cubic root of 1012052543 is about 1004.0014811251.

Adding to 1012052543 its reverse (3452502101), we get a palindrome (4464554644).

The spelling of 1012052543 in words is "one billion, twelve million, fifty-two thousand, five hundred forty-three".