442242042340213 has 4 divisors (see below), whose sum is σ = 442292798924428. Its totient is φ = 442191285756000.

The previous prime is 442242042340169. The next prime is 442242042340247. The reversal of 442242042340213 is 312043240242244.

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 258479671753809 + 183762370586404 = 16077303^2 + 13555898^2 .

It is a cyclic number.

It is not a de Polignac number, because 442242042340213 - 2¹⁷ = 442242042209141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442242042340513) 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, 25378279038 + ... + 25378296463.

It is an arithmetic number, because the mean of its divisors is an integer number (110573199731107).

Almost surely, 2^{442242042340213} is an apocalyptic number.

It is an amenable number.

442242042340213 is a deficient number, since it is larger than the sum of its proper divisors (50756584215).

442242042340213 is an equidigital number, since it uses as much as digits as its factorization.

442242042340213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50756584214.

The product of its (nonzero) digits is 294912, while the sum is 37.

Adding to 442242042340213 its reverse (312043240242244), we get a palindrome (754285282582457).

The spelling of 442242042340213 in words is "four hundred forty-two trillion, two hundred forty-two billion, forty-two million, three hundred forty thousand, two hundred thirteen".