842318 has 4 divisors (see below), whose sum is σ = 1263480. Its totient is φ = 421158.

The previous prime is 842311. The next prime is 842321. The reversal of 842318 is 813248.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×842318² = 1418999226248, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842318.

It is not an unprimeable number, because it can be changed into a prime (842311) by changing a digit.

842318 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 210578 + ... + 210581.

It is an arithmetic number, because the mean of its divisors is an integer number (315870).

2⁸⁴²³¹⁸ is an apocalyptic number.

842318 is a deficient number, since it is larger than the sum of its proper divisors (421162).

842318 is a wasteful number, since it uses less digits than its factorization.

842318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421161.

The product of its digits is 1536, while the sum is 26.

The square root of 842318 is about 917.7788404621. The cubic root of 842318 is about 94.4405904874.

The spelling of 842318 in words is "eight hundred forty-two thousand, three hundred eighteen".