442424434213 has 4 divisors (see below), whose sum is σ = 443737266700. Its totient is φ = 441111601728.

The previous prime is 442424434181. The next prime is 442424434229. The reversal of 442424434213 is 312434424244.

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 264460262049 + 177964172164 = 514257^2 + 421858^2 .

It is a cyclic number.

It is not a de Polignac number, because 442424434213 - 2⁵ = 442424434181 is a prime.

It is a super-3 number, since 3×442424434213³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442424434253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656415738 + ... + 656416411.

It is an arithmetic number, because the mean of its divisors is an integer number (110934316675).

Almost surely, 2^442424434213 is an apocalyptic number.

It is an amenable number.

442424434213 is a deficient number, since it is larger than the sum of its proper divisors (1312832487).

442424434213 is a wasteful number, since it uses less digits than its factorization.

442424434213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312832486.

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

Adding to 442424434213 its reverse (312434424244), we get a palindrome (754858858457).

The spelling of 442424434213 in words is "four hundred forty-two billion, four hundred twenty-four million, four hundred thirty-four thousand, two hundred thirteen".