82543942 has 32 divisors (see below), whose sum is σ = 148629600. Its totient is φ = 33965568.

The previous prime is 82543927. The next prime is 82543943. The reversal of 82543942 is 24934528.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82543943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3484 + ... + 13312.

It is an arithmetic number, because the mean of its divisors is an integer number (4644675).

Almost surely, 2^82543942 is an apocalyptic number.

82543942 is a deficient number, since it is larger than the sum of its proper divisors (66085658).

82543942 is a wasteful number, since it uses less digits than its factorization.

82543942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9880.

The product of its digits is 69120, while the sum is 37.

The square root of 82543942 is about 9085.3696677681. The cubic root of 82543942 is about 435.4066607144.

The spelling of 82543942 in words is "eighty-two million, five hundred forty-three thousand, nine hundred forty-two".