42043542402361 has 2 divisors, whose sum is σ = 42043542402362. Its totient is φ = 42043542402360.

The previous prime is 42043542402359. The next prime is 42043542402371. The reversal of 42043542402361 is 16320424534024.

42043542402361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38800503290025 + 3243039112336 = 6229005^2 + 1800844^2 .

It is a cyclic number.

It is not a de Polignac number, because 42043542402361 - 2¹ = 42043542402359 is a prime.

Together with 42043542402359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42043542402371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021771201180 + 21021771201181.

It is an arithmetic number, because the mean of its divisors is an integer number (21021771201181).

Almost surely, 2^{42043542402361} is an apocalyptic number.

It is an amenable number.

42043542402361 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043542402361 is an equidigital number, since it uses as much as digits as its factorization.

42043542402361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 42043542402361 its reverse (16320424534024), we get a palindrome (58363966936385).

The spelling of 42043542402361 in words is "forty-two trillion, forty-three billion, five hundred forty-two million, four hundred two thousand, three hundred sixty-one".