842939678 has 8 divisors (see below), whose sum is σ = 1445039472. Its totient is φ = 361259856.

The previous prime is 842939677. The next prime is 842939749. The reversal of 842939678 is 876939248.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842939677) 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, 30104975 + ... + 30105002.

It is an arithmetic number, because the mean of its divisors is an integer number (180629934).

Almost surely, 2^842939678 is an apocalyptic number.

842939678 is a deficient number, since it is larger than the sum of its proper divisors (602099794).

842939678 is a wasteful number, since it uses less digits than its factorization.

842939678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60209986.

The product of its digits is 5225472, while the sum is 56.

The square root of 842939678 is about 29033.4234633121. The cubic root of 842939678 is about 944.6381892728.

The spelling of 842939678 in words is "eight hundred forty-two million, nine hundred thirty-nine thousand, six hundred seventy-eight".