842212 has 18 divisors (see below), whose sum is σ = 1714902. Its totient is φ = 360864.

The previous prime is 842209. The next prime is 842249. The reversal of 842212 is 212248.

It can be written as a sum of positive squares in only one way, i.e., 729316 + 112896 = 854^2 + 336^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 842212.

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 5 ways as a sum of consecutive naturals, for example, 1953 + ... + 2344.

2⁸⁴²²¹² is an apocalyptic number.

It is an amenable number.

842212 is an abundant number, since it is smaller than the sum of its proper divisors (872690).

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

842212 is a wasteful number, since it uses less digits than its factorization.

842212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315 (or 4306 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 842212 is about 917.7210905281. The cubic root of 842212 is about 94.4366287522.

The spelling of 842212 in words is "eight hundred forty-two thousand, two hundred twelve".