42040140041 has 2 divisors, whose sum is σ = 42040140042. Its totient is φ = 42040140040.

The previous prime is 42040140007. The next prime is 42040140047. The reversal of 42040140041 is 14004104024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41617632016 + 422508025 = 204004^2 + 20555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42040140041 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42040139995 and 42040140022.

It is not a weakly prime, because it can be changed into another prime (42040140047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020070020 + 21020070021.

It is an arithmetic number, because the mean of its divisors is an integer number (21020070021).

Almost surely, 2^42040140041 is an apocalyptic number.

It is an amenable number.

42040140041 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040140041 is an equidigital number, since it uses as much as digits as its factorization.

42040140041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 42040140041 its reverse (14004104024), we get a palindrome (56044244065).

The spelling of 42040140041 in words is "forty-two billion, forty million, one hundred forty thousand, forty-one".