842210 has 8 divisors (see below), whose sum is σ = 1515996. Its totient is φ = 336880.

The previous prime is 842209. The next prime is 842249. The reversal of 842210 is 12248.

It can be written as a sum of positive squares in 2 ways, for example, as 776161 + 66049 = 881^2 + 257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

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 3 ways as a sum of consecutive naturals, for example, 42101 + ... + 42120.

2⁸⁴²²¹⁰ is an apocalyptic number.

842210 is a deficient number, since it is larger than the sum of its proper divisors (673786).

842210 is a wasteful number, since it uses less digits than its factorization.

842210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84228.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 842210 is about 917.7200008717. The cubic root of 842210 is about 94.4365539993.

Adding to 842210 its reverse (12248), we get a palindrome (854458).

The spelling of 842210 in words is "eight hundred forty-two thousand, two hundred ten".