1012200543 has 20 divisors (see below), whose sum is σ = 1564196040. Its totient is φ = 651529872.

The previous prime is 1012200523. The next prime is 1012200559. The reversal of 1012200543 is 3450022101.

1012200543 is a `hidden beast` number, since 1 + 0 + 122 + 0 + 0 + 543 = 666.

It is not a de Polignac number, because 1012200543 - 2⁶ = 1012200479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012200523) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 213105 + ... + 217802.

It is an arithmetic number, because the mean of its divisors is an integer number (78209802).

Almost surely, 2^1012200543 is an apocalyptic number.

1012200543 is a deficient number, since it is larger than the sum of its proper divisors (551995497).

1012200543 is an equidigital number, since it uses as much as digits as its factorization.

1012200543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430948 (or 430939 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1012200543 is about 31815.0992926315. The cubic root of 1012200543 is about 1004.0504196173.

Adding to 1012200543 its reverse (3450022101), we get a palindrome (4462222644).

The spelling of 1012200543 in words is "one billion, twelve million, two hundred thousand, five hundred forty-three".