985842 has 48 divisors (see below), whose sum is σ = 2515968. Its totient is φ = 275040.

The previous prime is 985819. The next prime is 985867. The reversal of 985842 is 248589.

It is a junction number, because it is equal to n+sod(n) for n = 985797 and 985806.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 985842.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2383 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2⁹⁸⁵⁸⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257984).

985842 is an abundant number, since it is smaller than the sum of its proper divisors (1530126).

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

985842 is a wasteful number, since it uses less digits than its factorization.

985842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 412 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 985842 is about 992.8957649220. The cubic root of 985842 is about 99.5258217706.

The spelling of 985842 in words is "nine hundred eighty-five thousand, eight hundred forty-two".