42041113221361 has 2 divisors, whose sum is σ = 42041113221362. Its totient is φ = 42041113221360.

The previous prime is 42041113221307. The next prime is 42041113221389. The reversal of 42041113221361 is 16312231114024.

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., 37015737411136 + 5025375810225 = 6084056^2 + 2241735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42041113221361 is a prime.

It is not a weakly prime, because it can be changed into another prime (42041113225361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21020556610680 + 21020556610681.

It is an arithmetic number, because the mean of its divisors is an integer number (21020556610681).

Almost surely, 2^{42041113221361} is an apocalyptic number.

It is an amenable number.

42041113221361 is a deficient number, since it is larger than the sum of its proper divisors (1).

42041113221361 is an equidigital number, since it uses as much as digits as its factorization.

42041113221361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 42041113221361 its reverse (16312231114024), we get a palindrome (58353344335385).

The spelling of 42041113221361 in words is "forty-two trillion, forty-one billion, one hundred thirteen million, two hundred twenty-one thousand, three hundred sixty-one".