3243242140521 has 4 divisors (see below), whose sum is σ = 4324322854032. Its totient is φ = 2162161427012.

The previous prime is 3243242140477. The next prime is 3243242140543. The reversal of 3243242140521 is 1250412423423.

It is a happy number.

3243242140521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3243242140521 - 2⁷ = 3243242140393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3243242141521) 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, 540540356751 + ... + 540540356756.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080713508).

Almost surely, 2^{3243242140521} is an apocalyptic number.

It is an amenable number.

3243242140521 is a deficient number, since it is larger than the sum of its proper divisors (1081080713511).

3243242140521 is a wasteful number, since it uses less digits than its factorization.

3243242140521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081080713510.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 3243242140521 its reverse (1250412423423), we get a palindrome (4493654563944).

The spelling of 3243242140521 in words is "three trillion, two hundred forty-three billion, two hundred forty-two million, one hundred forty thousand, five hundred twenty-one".