343842 has 16 divisors (see below), whose sum is σ = 728352. Its totient is φ = 107840.

The previous prime is 343831. The next prime is 343891. The reversal of 343842 is 248343.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343842.

It is an unprimeable number.

343842 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, 1584 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (45522).

2³⁴³⁸⁴² is an apocalyptic number.

343842 is an abundant number, since it is smaller than the sum of its proper divisors (384510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343842 is a wasteful number, since it uses less digits than its factorization.

343842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393.

The product of its digits is 2304, while the sum is 24.

The square root of 343842 is about 586.3804225927. The cubic root of 343842 is about 70.0572321058.

The spelling of 343842 in words is "three hundred forty-three thousand, eight hundred forty-two".