8128543 has 2 divisors, whose sum is σ = 8128544. Its totient is φ = 8128542.

The previous prime is 8128513. The next prime is 8128579. The reversal of 8128543 is 3458218.

8128543 is nontrivially palindromic in base 2.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8128543 - 2⁵ = 8128511 is a prime.

It is a super-2 number, since 2×8128543² = 132146422605698, which contains 22 as substring.

8128543 is a lucky number.

It is equal to p₅₄₇₈₄₃ and since 8128543 and 547843 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8128513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4064271 + 4064272.

It is an arithmetic number, because the mean of its divisors is an integer number (4064272).

Almost surely, 2^8128543 is an apocalyptic number.

8128543 is a deficient number, since it is larger than the sum of its proper divisors (1).

8128543 is an equidigital number, since it uses as much as digits as its factorization.

8128543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 8128543 is about 2851.0599783239. The cubic root of 8128543 is about 201.0655050807.

The spelling of 8128543 in words is "eight million, one hundred twenty-eight thousand, five hundred forty-three".