342056 has 48 divisors (see below), whose sum is σ = 790560. Its totient is φ = 137280.

The previous prime is 342049. The next prime is 342059. The reversal of 342056 is 650243.

It is not an unprimeable number, because it can be changed into a prime (342059) 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 in 11 ways as a sum of consecutive naturals, for example, 14861 + ... + 14883.

It is an arithmetic number, because the mean of its divisors is an integer number (16470).

2³⁴²⁰⁵⁶ is an apocalyptic number.

342056 is the 338-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395280).

342056 is an abundant number, since it is smaller than the sum of its proper divisors (448504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342056 is a wasteful number, since it uses less digits than its factorization.

342056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 342056 is about 584.8555377185. The cubic root of 342056 is about 69.9357233097.

Adding to 342056 its reverse (650243), we get a palindrome (992299).

The spelling of 342056 in words is "three hundred forty-two thousand, fifty-six".