340642 has 8 divisors (see below), whose sum is σ = 514332. Its totient is φ = 169200.

The previous prime is 340633. The next prime is 340643. The reversal of 340642 is 246043.

It can be written as a sum of positive squares in 2 ways, for example, as 314721 + 25921 = 561^2 + 161^2 .

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

It is not an unprimeable number, because it can be changed into a prime (340643) 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, 109 + ... + 832.

2³⁴⁰⁶⁴² is an apocalyptic number.

340642 is a deficient number, since it is larger than the sum of its proper divisors (173690).

340642 is a wasteful number, since it uses less digits than its factorization.

340642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 340642 is about 583.6454403146. The cubic root of 340642 is about 69.8392228438.

Adding to 340642 its reverse (246043), we get a palindrome (586685).

The spelling of 340642 in words is "three hundred forty thousand, six hundred forty-two".