42442321013 has 4 divisors (see below), whose sum is σ = 42464649228. Its totient is φ = 42419992800.

The previous prime is 42442320971. The next prime is 42442321039. The reversal of 42442321013 is 31012324424.

42442321013 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.

It can be written as a sum of positive squares in 2 ways, for example, as 10814544049 + 31627776964 = 103993^2 + 177842^2 .

It is a cyclic number.

It is not a de Polignac number, because 42442321013 - 2¹⁰ = 42442319989 is a prime.

It is a super-2 number, since 2×42442321013² (a number of 22 digits) contains 22 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 (42442321063) 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, 11161256 + ... + 11165057.

It is an arithmetic number, because the mean of its divisors is an integer number (10616162307).

Almost surely, 2^42442321013 is an apocalyptic number.

It is an amenable number.

42442321013 is a deficient number, since it is larger than the sum of its proper divisors (22328215).

42442321013 is a wasteful number, since it uses less digits than its factorization.

42442321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22328214.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 42442321013 its reverse (31012324424), we get a palindrome (73454645437).

The spelling of 42442321013 in words is "forty-two billion, four hundred forty-two million, three hundred twenty-one thousand, thirteen".