6851842 has 4 divisors (see below), whose sum is σ = 10277766. Its totient is φ = 3425920.

The previous prime is 6851839. The next prime is 6851863. The reversal of 6851842 is 2481586.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2481586 = 2 ⋅1240793.

It can be written as a sum of positive squares in only one way, i.e., 6245001 + 606841 = 2499^2 + 779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6851798 and 6851807.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1712959 + ... + 1712962.

Almost surely, 2^6851842 is an apocalyptic number.

6851842 is a deficient number, since it is larger than the sum of its proper divisors (3425924).

6851842 is a wasteful number, since it uses less digits than its factorization.

6851842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425923.

The product of its digits is 15360, while the sum is 34.

The square root of 6851842 is about 2617.6023380185. The cubic root of 6851842 is about 189.9338828120.

The spelling of 6851842 in words is "six million, eight hundred fifty-one thousand, eight hundred forty-two".