342609 has 4 divisors (see below), whose sum is σ = 456816. Its totient is φ = 228404.

The previous prime is 342607. The next prime is 342647. The reversal of 342609 is 906243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 342609 - 2¹ = 342607 is a prime.

It is a super-3 number, since 3×342609³ = 120647285933317587, which contains 333 as substring.

It is a D-number.

342609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (342607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57099 + ... + 57104.

It is an arithmetic number, because the mean of its divisors is an integer number (114204).

2³⁴²⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

342609 is a deficient number, since it is larger than the sum of its proper divisors (114207).

342609 is a wasteful number, since it uses less digits than its factorization.

342609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114206.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 342609 is about 585.3281131126. The cubic root of 342609 is about 69.9733912472.

The spelling of 342609 in words is "three hundred forty-two thousand, six hundred nine".