82042738 has 8 divisors (see below), whose sum is σ = 123248988. Its totient is φ = 40959744.

The previous prime is 82042721. The next prime is 82042739. The reversal of 82042738 is 83724028.

It can be written as a sum of positive squares in 2 ways, for example, as 76440049 + 5602689 = 8743^2 + 2367^2 .

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

It is not an unprimeable number, because it can be changed into a prime (82042739) 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, 29131 + ... + 31822.

Almost surely, 2^82042738 is an apocalyptic number.

82042738 is a deficient number, since it is larger than the sum of its proper divisors (41206250).

82042738 is a wasteful number, since it uses less digits than its factorization.

82042738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61628.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 82042738 is about 9057.7446420177. The cubic root of 82042738 is about 434.5236128864.

The spelling of 82042738 in words is "eighty-two million, forty-two thousand, seven hundred thirty-eight".