843138 has 24 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 271800.

The previous prime is 843137. The next prime is 843173. The reversal of 843138 is 831348.

843138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (843131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (78624).

2⁸⁴³¹³⁸ is an apocalyptic number.

843138 is an abundant number, since it is smaller than the sum of its proper divisors (1043838).

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

843138 is a wasteful number, since it uses less digits than its factorization.

843138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 1547 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 843138 is about 918.2254625091. The cubic root of 843138 is about 94.4712266477.

The spelling of 843138 in words is "eight hundred forty-three thousand, one hundred thirty-eight".