842236 has 12 divisors (see below), whose sum is σ = 1481760. Its totient is φ = 418880.

The previous prime is 842209. The next prime is 842249. The reversal of 842236 is 632248.

It is a happy number.

It is a super-2 number, since 2×842236² = 1418722959392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 842236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (123480).

2⁸⁴²²³⁶ is an apocalyptic number.

It is an amenable number.

842236 is a deficient number, since it is larger than the sum of its proper divisors (639524).

842236 is a wasteful number, since it uses less digits than its factorization.

842236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1122 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 842236 is about 917.7341663031. The cubic root of 842236 is about 94.4375257779.

The spelling of 842236 in words is "eight hundred forty-two thousand, two hundred thirty-six".