8043842 has 8 divisors (see below), whose sum is σ = 12185532. Its totient is φ = 3982000.

The previous prime is 8043809. The next prime is 8043851. The reversal of 8043842 is 2483408.

It can be written as a sum of positive squares in 2 ways, for example, as 6964321 + 1079521 = 2639^2 + 1039^2 .

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

It is an Ulam number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 19709 + ... + 20112.

Almost surely, 2^8043842 is an apocalyptic number.

8043842 is a deficient number, since it is larger than the sum of its proper divisors (4141690).

8043842 is a wasteful number, since it uses less digits than its factorization.

8043842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39924.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 8043842 is about 2836.1667792991. The cubic root of 8043842 is about 200.3646846215.

The spelling of 8043842 in words is "eight million, forty-three thousand, eight hundred forty-two".