342315521 has 8 divisors (see below), whose sum is σ = 343972200. Its totient is φ = 340663680.

The previous prime is 342315517. The next prime is 342315541. The reversal of 342315521 is 125513243.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54538225 + 287777296 = 7385^2 + 16964^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 342315521 - 2² = 342315517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342315541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 238835 + ... + 240263.

It is an arithmetic number, because the mean of its divisors is an integer number (42996525).

Almost surely, 2^342315521 is an apocalyptic number.

It is an amenable number.

342315521 is a deficient number, since it is larger than the sum of its proper divisors (1656679).

342315521 is a wasteful number, since it uses less digits than its factorization.

342315521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its digits is 3600, while the sum is 26.

The square root of 342315521 is about 18501.7707530928. The cubic root of 342315521 is about 699.5340579503.

Adding to 342315521 its reverse (125513243), we get a palindrome (467828764).

The spelling of 342315521 in words is "three hundred forty-two million, three hundred fifteen thousand, five hundred twenty-one".