1012004543 has 16 divisors (see below), whose sum is σ = 1230474240. Its totient is φ = 820310400.

The previous prime is 1012004537. The next prime is 1012004557. The reversal of 1012004543 is 3454002101.

It is a cyclic number.

It is not a de Polignac number, because 1012004543 - 2⁶ = 1012004479 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 (1012004593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138863 + ... + 145968.

It is an arithmetic number, because the mean of its divisors is an integer number (76904640).

Almost surely, 2^1012004543 is an apocalyptic number.

1012004543 is a deficient number, since it is larger than the sum of its proper divisors (218469697).

1012004543 is a wasteful number, since it uses less digits than its factorization.

1012004543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284878.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1012004543 is about 31812.0188450843. The cubic root of 1012004543 is about 1003.9856081571.

Adding to 1012004543 its reverse (3454002101), we get a palindrome (4466006644).

The spelling of 1012004543 in words is "one billion, twelve million, four thousand, five hundred forty-three".