20442042041 has 4 divisors (see below), whose sum is σ = 21101462784. Its totient is φ = 19782621300.

The previous prime is 20442042001. The next prime is 20442042043. The reversal of 20442042041 is 14024024402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20442042041 is a prime.

It is a super-2 number, since 2×20442042041² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20442041998 and 20442042016.

It is not an unprimeable number, because it can be changed into a prime (20442042043) 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, 329710325 + ... + 329710386.

It is an arithmetic number, because the mean of its divisors is an integer number (5275365696).

Almost surely, 2^20442042041 is an apocalyptic number.

It is an amenable number.

20442042041 is a deficient number, since it is larger than the sum of its proper divisors (659420743).

20442042041 is an equidigital number, since it uses as much as digits as its factorization.

20442042041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659420742.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20442042041 its reverse (14024024402), we get a palindrome (34466066443).

The spelling of 20442042041 in words is "twenty billion, four hundred forty-two million, forty-two thousand, forty-one".