8439142282 has 4 divisors (see below), whose sum is σ = 12658713426. Its totient is φ = 4219571140.

The previous prime is 8439142273. The next prime is 8439142291. The reversal of 8439142282 is 2822419348.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (8439142273) and next prime (8439142291).

It can be written as a sum of positive squares in only one way, i.e., 7597039921 + 842102361 = 87161^2 + 29019^2 .

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, 2109785569 + ... + 2109785572.

Almost surely, 2^8439142282 is an apocalyptic number.

8439142282 is a deficient number, since it is larger than the sum of its proper divisors (4219571144).

8439142282 is a wasteful number, since it uses less digits than its factorization.

8439142282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219571143.

The product of its digits is 221184, while the sum is 43.

The square root of 8439142282 is about 91864.8043703354. The cubic root of 8439142282 is about 2035.9452880017.

The spelling of 8439142282 in words is "eight billion, four hundred thirty-nine million, one hundred forty-two thousand, two hundred eighty-two".