342643 has 8 divisors (see below), whose sum is σ = 404480. Its totient is φ = 284040.

The previous prime is 342607. The next prime is 342647. The reversal of 342643 is 346243.

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 342643 - 2⁹ = 342131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342647) 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 7 ways as a sum of consecutive naturals, for example, 573 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (50560).

2³⁴²⁶⁴³ is an apocalyptic number.

342643 is a deficient number, since it is larger than the sum of its proper divisors (61837).

342643 is a wasteful number, since it uses less digits than its factorization.

342643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its digits is 1728, while the sum is 22.

The square root of 342643 is about 585.3571559313. The cubic root of 342643 is about 69.9757058552.

Adding to 342643 its reverse (346243), we get a palindrome (688886).

Subtracting 342643 from its reverse (346243), we obtain a square (3600 = 60²).

The spelling of 342643 in words is "three hundred forty-two thousand, six hundred forty-three".