40442241013 has 4 divisors (see below), whose sum is σ = 40452213580. Its totient is φ = 40432268448.

The previous prime is 40442240987. The next prime is 40442241029. The reversal of 40442241013 is 31014224404.

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 14170045444 + 26272195569 = 119038^2 + 162087^2 .

It is a cyclic number.

It is not a de Polignac number, because 40442241013 - 2¹³ = 40442232821 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 (40442241083) 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, 4980198 + ... + 4988311.

It is an arithmetic number, because the mean of its divisors is an integer number (10113053395).

Almost surely, 2^40442241013 is an apocalyptic number.

It is an amenable number.

40442241013 is a deficient number, since it is larger than the sum of its proper divisors (9972567).

40442241013 is an equidigital number, since it uses as much as digits as its factorization.

40442241013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9972566.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40442241013 its reverse (31014224404), we get a palindrome (71456465417).

The spelling of 40442241013 in words is "forty billion, four hundred forty-two million, two hundred forty-one thousand, thirteen".