343642 has 8 divisors (see below), whose sum is σ = 555156. Its totient is φ = 158592.

The previous prime is 343639. The next prime is 343649. The reversal of 343642 is 246343.

It can be written as a sum of positive squares in 2 ways, for example, as 323761 + 19881 = 569^2 + 141^2 .

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

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343642.

It is not an unprimeable number, because it can be changed into a prime (343649) 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, 6583 + ... + 6634.

2³⁴³⁶⁴² is an apocalyptic number.

343642 is a deficient number, since it is larger than the sum of its proper divisors (211514).

343642 is a wasteful number, since it uses less digits than its factorization.

343642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13232.

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

The square root of 343642 is about 586.2098600331. The cubic root of 343642 is about 70.0436462495.

Adding to 343642 its reverse (246343), we get a palindrome (589985).

The spelling of 343642 in words is "three hundred forty-three thousand, six hundred forty-two".