82556842 has 8 divisors (see below), whose sum is σ = 127182276. Its totient is φ = 40162752.

The previous prime is 82556839. The next prime is 82556849. The reversal of 82556842 is 24865528.

It can be written as a sum of positive squares in 2 ways, for example, as 81162081 + 1394761 = 9009^2 + 1181^2 .

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

It is a super-2 number, since 2×82556842² = 13631264322025928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82556795 and 82556804.

It is not an unprimeable number, because it can be changed into a prime (82556849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557743 + ... + 557890.

Almost surely, 2^82556842 is an apocalyptic number.

82556842 is a deficient number, since it is larger than the sum of its proper divisors (44625434).

82556842 is a wasteful number, since it uses less digits than its factorization.

82556842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115672.

The product of its digits is 153600, while the sum is 40.

The square root of 82556842 is about 9086.0795726210. The cubic root of 82556842 is about 435.4293413748.

The spelling of 82556842 in words is "eighty-two million, five hundred fifty-six thousand, eight hundred forty-two".