42041442013 has 4 divisors (see below), whose sum is σ = 43491146940. Its totient is φ = 40591737088.

The previous prime is 42041441999. The next prime is 42041442029. The reversal of 42041442013 is 31024414024.

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 9043629604 + 32997812409 = 95098^2 + 181653^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42041442013 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 (42041442913) 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, 724852420 + ... + 724852477.

It is an arithmetic number, because the mean of its divisors is an integer number (10872786735).

Almost surely, 2^42041442013 is an apocalyptic number.

It is an amenable number.

42041442013 is a deficient number, since it is larger than the sum of its proper divisors (1449704927).

42041442013 is a wasteful number, since it uses less digits than its factorization.

42041442013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449704926.

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

Adding to 42041442013 its reverse (31024414024), we get a palindrome (73065856037).

The spelling of 42041442013 in words is "forty-two billion, forty-one million, four hundred forty-two thousand, thirteen".