82243442 has 4 divisors (see below), whose sum is σ = 123365166. Its totient is φ = 41121720.

The previous prime is 82243411. The next prime is 82243453. The reversal of 82243442 is 24434228.

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., 80658361 + 1585081 = 8981^2 + 1259^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20560859 + ... + 20560862.

Almost surely, 2^82243442 is an apocalyptic number.

82243442 is a deficient number, since it is larger than the sum of its proper divisors (41121724).

82243442 is a wasteful number, since it uses less digits than its factorization.

82243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41121723.

The product of its digits is 12288, while the sum is 29.

The square root of 82243442 is about 9068.8170121576. The cubic root of 82243442 is about 434.8776544114.

The spelling of 82243442 in words is "eighty-two million, two hundred forty-three thousand, four hundred forty-two".