8143842 has 32 divisors (see below), whose sum is σ = 18883584. Its totient is φ = 2293200.

The previous prime is 8143841. The next prime is 8143847. The reversal of 8143842 is 2483418.

It is not an unprimeable number, because it can be changed into a prime (8143841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617 + ... + 4347.

It is an arithmetic number, because the mean of its divisors is an integer number (590112).

Almost surely, 2^8143842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8143842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9441792).

8143842 is an abundant number, since it is smaller than the sum of its proper divisors (10739742).

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

8143842 is a wasteful number, since it uses less digits than its factorization.

8143842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814.

The product of its digits is 6144, while the sum is 30.

The square root of 8143842 is about 2853.7417542588. The cubic root of 8143842 is about 201.1915700389.

It can be divided in two parts, 814 and 3842, that added together give a triangular number (4656 = T₉₆).

The spelling of 8143842 in words is "eight million, one hundred forty-three thousand, eight hundred forty-two".