82715242 has 4 divisors (see below), whose sum is σ = 124072866. Its totient is φ = 41357620.

The previous prime is 82715231. The next prime is 82715249. The reversal of 82715242 is 24251728.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 77281681 + 5433561 = 8791^2 + 2331^2 .

It is a super-2 number, since 2×82715242² = 13683622518237128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (82715249) 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 as a sum of consecutive naturals, namely, 20678809 + ... + 20678812.

Almost surely, 2^82715242 is an apocalyptic number.

82715242 is a deficient number, since it is larger than the sum of its proper divisors (41357624).

82715242 is a wasteful number, since it uses less digits than its factorization.

82715242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41357623.

The product of its digits is 8960, while the sum is 31.

The square root of 82715242 is about 9094.7920262093. The cubic root of 82715242 is about 435.7076463636.

The spelling of 82715242 in words is "eighty-two million, seven hundred fifteen thousand, two hundred forty-two".