342656 has 16 divisors (see below), whose sum is σ = 682890. Its totient is φ = 171264.

The previous prime is 342653. The next prime is 342659. The reversal of 342656 is 656243.

It is an interprime number because it is at equal distance from previous prime (342653) and next prime (342659).

It can be written as a sum of positive squares in only one way, i.e., 341056 + 1600 = 584^2 + 40^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a d-powerful number, because it can be written as 3⁷ + 4⁹ + 6² + 2⁷ + 5⁷ + 6² .

It is not an unprimeable number, because it can be changed into a prime (342653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211 + ... + 1466.

2³⁴²⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

342656 is a deficient number, since it is larger than the sum of its proper divisors (340234).

342656 is an equidigital number, since it uses as much as digits as its factorization.

342656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2679 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 342656 is about 585.3682601577. The cubic root of 342656 is about 69.9765908119.

Adding to 342656 its reverse (656243), we get a palindrome (998899).

The spelling of 342656 in words is "three hundred forty-two thousand, six hundred fifty-six".