342920656 has 40 divisors (see below), whose sum is σ = 720143144. Its totient is φ = 157248000.

The previous prime is 342920647. The next prime is 342920687. The reversal of 342920656 is 656029243.

342920656 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 78400 + 342842256 = 280^2 + 18516^2 .

It is a super-2 number, since 2×342920656² = 235189152622940672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27406 + ... + 37906.

Almost surely, 2^342920656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342920656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360071572).

342920656 is an abundant number, since it is smaller than the sum of its proper divisors (377222488).

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

342920656 is a wasteful number, since it uses less digits than its factorization.

342920656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10679 (or 10673 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 342920656 is about 18518.1169669057. The cubic root of 342920656 is about 699.9460203273.

Adding to 342920656 its reverse (656029243), we get a palindrome (998949899).

The spelling of 342920656 in words is "three hundred forty-two million, nine hundred twenty thousand, six hundred fifty-six".