6856142 has 4 divisors (see below), whose sum is σ = 10284216. Its totient is φ = 3428070.

The previous prime is 6856141. The next prime is 6856153. The reversal of 6856142 is 2416586.

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

It is a junction number, because it is equal to n+sod(n) for n = 6856099 and 6856108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6856141) by changing a digit.

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 as a sum of consecutive naturals, namely, 1714034 + ... + 1714037.

It is an arithmetic number, because the mean of its divisors is an integer number (2571054).

Almost surely, 2^6856142 is an apocalyptic number.

6856142 is a deficient number, since it is larger than the sum of its proper divisors (3428074).

6856142 is a wasteful number, since it uses less digits than its factorization.

6856142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428073.

The product of its digits is 11520, while the sum is 32.

The square root of 6856142 is about 2618.4235715407. The cubic root of 6856142 is about 189.9736066755.

The spelling of 6856142 in words is "six million, eight hundred fifty-six thousand, one hundred forty-two".