342806641 has 4 divisors (see below), whose sum is σ = 348426484. Its totient is φ = 337186800.

The previous prime is 342806603. The next prime is 342806657. The reversal of 342806641 is 146608243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146608243 = 103 ⋅1423381.

It can be written as a sum of positive squares in 2 ways, for example, as 142301041 + 200505600 = 11929^2 + 14160^2 .

It is a cyclic number.

It is not a de Polignac number, because 342806641 - 2¹⁷ = 342675569 is a prime.

It is a super-2 number, since 2×342806641² = 235032786227405762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342806597 and 342806606.

It is not an unprimeable number, because it can be changed into a prime (342806671) 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, 2809830 + ... + 2809951.

It is an arithmetic number, because the mean of its divisors is an integer number (87106621).

Almost surely, 2^342806641 is an apocalyptic number.

It is an amenable number.

342806641 is a deficient number, since it is larger than the sum of its proper divisors (5619843).

342806641 is an equidigital number, since it uses as much as digits as its factorization.

342806641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5619842.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 342806641 is about 18515.0382392260. The cubic root of 342806641 is about 699.8684385405.

The spelling of 342806641 in words is "three hundred forty-two million, eight hundred six thousand, six hundred forty-one".