342005 has 8 divisors (see below), whose sum is σ = 416472. Its totient is φ = 269568.

The previous prime is 341993. The next prime is 342037. The reversal of 342005 is 500243.

342005 = T₂₀₆ + T₂₀₇ + ... + T₂₂₀.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 339889 = 46^2 + 583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 342005 - 2⁸ = 341749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (52059).

2³⁴²⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

342005 is a deficient number, since it is larger than the sum of its proper divisors (74467).

342005 is an equidigital number, since it uses as much as digits as its factorization.

342005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 342005 is about 584.8119355827. The cubic root of 342005 is about 69.9322473689.

Adding to 342005 its reverse (500243), we get a palindrome (842248).

The spelling of 342005 in words is "three hundred forty-two thousand, five".