812342 has 4 divisors (see below), whose sum is σ = 1218516. Its totient is φ = 406170.

The previous prime is 812341. The next prime is 812347. The reversal of 812342 is 243218.

812342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243218 = 2 ⋅121609.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203084 + ... + 203087.

It is an arithmetic number, because the mean of its divisors is an integer number (304629).

2⁸¹²³⁴² is an apocalyptic number.

812342 is a deficient number, since it is larger than the sum of its proper divisors (406174).

812342 is a wasteful number, since it uses less digits than its factorization.

812342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406173.

The product of its digits is 384, while the sum is 20.

The square root of 812342 is about 901.3001719738. The cubic root of 812342 is about 93.3067299461.

The spelling of 812342 in words is "eight hundred twelve thousand, three hundred forty-two".