842841851 has 4 divisors (see below), whose sum is σ = 846459432. Its totient is φ = 839224272.

The previous prime is 842841823. The next prime is 842841859. The reversal of 842841851 is 158148248.

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

It is a cyclic number.

It is not a de Polignac number, because 842841851 - 2¹⁰ = 842840827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 842841799 and 842841808.

It is not an unprimeable number, because it can be changed into a prime (842841859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808441 + ... + 1808906.

It is an arithmetic number, because the mean of its divisors is an integer number (211614858).

Almost surely, 2^842841851 is an apocalyptic number.

842841851 is a deficient number, since it is larger than the sum of its proper divisors (3617581).

842841851 is a wasteful number, since it uses less digits than its factorization.

842841851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617580.

The product of its digits is 81920, while the sum is 41.

The square root of 842841851 is about 29031.7386837234. The cubic root of 842841851 is about 944.6016446668.

The spelling of 842841851 in words is "eight hundred forty-two million, eight hundred forty-one thousand, eight hundred fifty-one".