82042543 has 8 divisors (see below), whose sum is σ = 89597520. Its totient is φ = 74503680.

The previous prime is 82042531. The next prime is 82042547. The reversal of 82042543 is 34524028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82042543 - 2⁹ = 82042031 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 (82042547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8271 + ... + 15247.

It is an arithmetic number, because the mean of its divisors is an integer number (11199690).

Almost surely, 2^82042543 is an apocalyptic number.

82042543 is a deficient number, since it is larger than the sum of its proper divisors (7554977).

82042543 is a wasteful number, since it uses less digits than its factorization.

82042543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8057.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 82042543 is about 9057.7338777423. The cubic root of 82042543 is about 434.5232686261.

The spelling of 82042543 in words is "eighty-two million, forty-two thousand, five hundred forty-three".