42341351201521 has 4 divisors (see below), whose sum is σ = 42342084963700. Its totient is φ = 42340617439344.

The previous prime is 42341351201449. The next prime is 42341351201531. The reversal of 42341351201521 is 12510215314324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4863630372496 + 37477720829025 = 2205364^2 + 6121905^2 .

It is a cyclic number.

It is not a de Polignac number, because 42341351201521 - 2²⁵ = 42341317647089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42341351201531) 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, 366794526 + ... + 366909943.

It is an arithmetic number, because the mean of its divisors is an integer number (10585521240925).

Almost surely, 2^{42341351201521} is an apocalyptic number.

It is an amenable number.

42341351201521 is a deficient number, since it is larger than the sum of its proper divisors (733762179).

42341351201521 is an equidigital number, since it uses as much as digits as its factorization.

42341351201521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733762178.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 42341351201521 its reverse (12510215314324), we get a palindrome (54851566515845).

The spelling of 42341351201521 in words is "forty-two trillion, three hundred forty-one billion, three hundred fifty-one million, two hundred one thousand, five hundred twenty-one".