342818 has 16 divisors (see below), whose sum is σ = 601344. Its totient is φ = 143520.

The previous prime is 342803. The next prime is 342821. The reversal of 342818 is 818243.

It is a super-2 number, since 2×342818² = 235048362248, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342818.

It is an unprimeable number.

342818 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 7 ways as a sum of consecutive naturals, for example, 398 + ... + 918.

It is an arithmetic number, because the mean of its divisors is an integer number (37584).

2³⁴²⁸¹⁸ is an apocalyptic number.

342818 is a deficient number, since it is larger than the sum of its proper divisors (258526).

342818 is a wasteful number, since it uses less digits than its factorization.

342818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577.

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

The square root of 342818 is about 585.5066182376. The cubic root of 342818 is about 69.9876168571.

The spelling of 342818 in words is "three hundred forty-two thousand, eight hundred eighteen".