342439 has 4 divisors (see below), whose sum is σ = 343656. Its totient is φ = 341224.

The previous prime is 342421. The next prime is 342449. The reversal of 342439 is 934243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 342439 - 2⁹ = 341927 is a prime.

It is a d-powerful number, because it can be written as 3 + 4⁸ + 4⁹ + 2¹³ + 3 + 9⁴ .

It is a Duffinian number.

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 342439.

It is not an unprimeable number, because it can be changed into a prime (342449) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 57 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (85914).

2³⁴²⁴³⁹ is an apocalyptic number.

342439 is a deficient number, since it is larger than the sum of its proper divisors (1217).

342439 is an equidigital number, since it uses as much as digits as its factorization.

342439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its digits is 2592, while the sum is 25.

The square root of 342439 is about 585.1828773982. The cubic root of 342439 is about 69.9618159096.

The spelling of 342439 in words is "three hundred forty-two thousand, four hundred thirty-nine".