812422 has 8 divisors (see below), whose sum is σ = 1312416. Its totient is φ = 374952.

The previous prime is 812401. The next prime is 812431. The reversal of 812422 is 224218.

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

It is a self number, because there is not a number n which added to its sum of digits gives 812422.

It is a congruent number.

It is an unprimeable number.

812422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15598 + ... + 15649.

It is an arithmetic number, because the mean of its divisors is an integer number (164052).

2⁸¹²⁴²² is an apocalyptic number.

812422 is a deficient number, since it is larger than the sum of its proper divisors (499994).

812422 is a wasteful number, since it uses less digits than its factorization.

812422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31262.

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

The square root of 812422 is about 901.3445512122. The cubic root of 812422 is about 93.3097928159.

The spelling of 812422 in words is "eight hundred twelve thousand, four hundred twenty-two".