8437842 has 48 divisors (see below), whose sum is σ = 21071232. Its totient is φ = 2390400.

The previous prime is 8437837. The next prime is 8437861. The reversal of 8437842 is 2487348.

It is a d-powerful number, because it can be written as 8 + 4³ + 3 + 7 + 8⁵ + 4⁷ + 2²³ .

It is a junction number, because it is equal to n+sod(n) for n = 8437797 and 8437806.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20842 + ... + 21242.

It is an arithmetic number, because the mean of its divisors is an integer number (438984).

Almost surely, 2^8437842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8437842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10535616).

8437842 is an abundant number, since it is smaller than the sum of its proper divisors (12633390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8437842 is a wasteful number, since it uses less digits than its factorization.

8437842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 580 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 8437842 is about 2904.7963784059. The cubic root of 8437842 is about 203.5840718173.

The spelling of 8437842 in words is "eight million, four hundred thirty-seven thousand, eight hundred forty-two".