678682142 has 8 divisors (see below), whose sum is σ = 1018139976. Its totient is φ = 339302152.

The previous prime is 678682129. The next prime is 678682187. The reversal of 678682142 is 241286876.

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

It is a junction number, because it is equal to n+sod(n) for n = 678682093 and 678682102.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 13508 + ... + 39240.

It is an arithmetic number, because the mean of its divisors is an integer number (127267497).

Almost surely, 2^678682142 is an apocalyptic number.

678682142 is a deficient number, since it is larger than the sum of its proper divisors (339457834).

678682142 is a wasteful number, since it uses less digits than its factorization.

678682142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38922.

The product of its digits is 258048, while the sum is 44.

The square root of 678682142 is about 26051.5285923878. The cubic root of 678682142 is about 878.7974888997.

The spelling of 678682142 in words is "six hundred seventy-eight million, six hundred eighty-two thousand, one hundred forty-two".