842830 has 16 divisors (see below), whose sum is σ = 1535760. Its totient is φ = 332992.

The previous prime is 842819. The next prime is 842857. The reversal of 842830 is 38248.

It is a junction number, because it is equal to n+sod(n) for n = 842795 and 842804.

It is a congruent number.

It is an unprimeable number.

842830 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 417 + ... + 1363.

It is an arithmetic number, because the mean of its divisors is an integer number (95985).

2⁸⁴²⁸³⁰ is an apocalyptic number.

842830 is a deficient number, since it is larger than the sum of its proper divisors (692930).

842830 is a wasteful number, since it uses less digits than its factorization.

842830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 842830 is about 918.0577323894. The cubic root of 842830 is about 94.4597217373.

The spelling of 842830 in words is "eight hundred forty-two thousand, eight hundred thirty".