342839 has 16 divisors (see below), whose sum is σ = 430848. Its totient is φ = 266112.

The previous prime is 342833. The next prime is 342841. The reversal of 342839 is 938243.

It is a de Polignac number, because none of the positive numbers 2^k-342839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5084 + ... + 5150.

It is an arithmetic number, because the mean of its divisors is an integer number (26928).

2³⁴²⁸³⁹ is an apocalyptic number.

342839 is a deficient number, since it is larger than the sum of its proper divisors (88009).

342839 is a wasteful number, since it uses less digits than its factorization.

342839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134.

The product of its digits is 5184, while the sum is 29.

The square root of 342839 is about 585.5245511505. The cubic root of 342839 is about 69.9890459050.

The spelling of 342839 in words is "three hundred forty-two thousand, eight hundred thirty-nine".