8642842 has 8 divisors (see below), whose sum is σ = 13961556. Its totient is φ = 3988992.

The previous prime is 8642839. The next prime is 8642849. The reversal of 8642842 is 2482468.

It can be written as a sum of positive squares in 2 ways, for example, as 8473921 + 168921 = 2911^2 + 411^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 8642798 and 8642807.

It is not an unprimeable number, because it can be changed into a prime (8642849) 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, 166183 + ... + 166234.

Almost surely, 2^8642842 is an apocalyptic number.

8642842 is a deficient number, since it is larger than the sum of its proper divisors (5318714).

8642842 is a wasteful number, since it uses less digits than its factorization.

8642842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332432.

The product of its digits is 24576, while the sum is 34.

The square root of 8642842 is about 2939.8710856090. The cubic root of 8642842 is about 205.2196099850.

The spelling of 8642842 in words is "eight million, six hundred forty-two thousand, eight hundred forty-two".