342638 has 8 divisors (see below), whose sum is σ = 521832. Its totient is φ = 168696.

The previous prime is 342607. The next prime is 342647. The reversal of 342638 is 836243.

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

It is a congruent number.

It is an unprimeable number.

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, 1145 + ... + 1412.

It is an arithmetic number, because the mean of its divisors is an integer number (65229).

2³⁴²⁶³⁸ is an apocalyptic number.

342638 is a deficient number, since it is larger than the sum of its proper divisors (179194).

342638 is a wasteful number, since it uses less digits than its factorization.

342638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626.

The product of its digits is 3456, while the sum is 26.

The square root of 342638 is about 585.3528850189. The cubic root of 342638 is about 69.9753654813.

The spelling of 342638 in words is "three hundred forty-two thousand, six hundred thirty-eight".