842686305 has 32 divisors (see below), whose sum is σ = 1408720896. Its totient is φ = 429342144.

The previous prime is 842686297. The next prime is 842686307. The reversal of 842686305 is 503686248.

It is not a de Polignac number, because 842686305 - 2³ = 842686297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (842686307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531544 + ... + 533126.

It is an arithmetic number, because the mean of its divisors is an integer number (44022528).

Almost surely, 2^842686305 is an apocalyptic number.

It is an amenable number.

842686305 is a deficient number, since it is larger than the sum of its proper divisors (566034591).

842686305 is a wasteful number, since it uses less digits than its factorization.

842686305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 842686305 is about 29029.0596644121. The cubic root of 842686305 is about 944.5435325205.

The spelling of 842686305 in words is "eight hundred forty-two million, six hundred eighty-six thousand, three hundred five".