42303340112921 has 2 divisors, whose sum is σ = 42303340112922. Its totient is φ = 42303340112920.

The previous prime is 42303340112867. The next prime is 42303340112923. The reversal of 42303340112921 is 12921104330324.

42303340112921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26401469191696 + 15901870921225 = 5138236^2 + 3987715^2 .

It is a cyclic number.

It is not a de Polignac number, because 42303340112921 - 2¹⁸ = 42303339850777 is a prime.

It is a Sophie Germain prime.

Together with 42303340112923, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42303340112923) 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, 21151670056460 + 21151670056461.

It is an arithmetic number, because the mean of its divisors is an integer number (21151670056461).

Almost surely, 2^{42303340112921} is an apocalyptic number.

It is an amenable number.

42303340112921 is a deficient number, since it is larger than the sum of its proper divisors (1).

42303340112921 is an equidigital number, since it uses as much as digits as its factorization.

42303340112921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 42303340112921 in words is "forty-two trillion, three hundred three billion, three hundred forty million, one hundred twelve thousand, nine hundred twenty-one".