842851 has 8 divisors (see below), whose sum is σ = 875520. Its totient is φ = 810888.

The previous prime is 842819. The next prime is 842857. The reversal of 842851 is 158248.

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

It is a cyclic number.

It is not a de Polignac number, because 842851 - 2⁵ = 842819 is a prime.

It is a Duffinian number.

842851 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (842857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3600 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2⁸⁴²⁸⁵¹ is an apocalyptic number.

842851 is a deficient number, since it is larger than the sum of its proper divisors (32669).

842851 is a wasteful number, since it uses less digits than its factorization.

842851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its digits is 2560, while the sum is 28.

The square root of 842851 is about 918.0691695074. The cubic root of 842851 is about 94.4605062520.

The spelling of 842851 in words is "eight hundred forty-two thousand, eight hundred fifty-one".