42140212606621 has 2 divisors, whose sum is σ = 42140212606622. Its totient is φ = 42140212606620.

The previous prime is 42140212606589. The next prime is 42140212606703. The reversal of 42140212606621 is 12660621204124.

42140212606621 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., 37349038840996 + 4791173765625 = 6111386^2 + 2188875^2 .

It is a cyclic number.

It is not a de Polignac number, because 42140212606621 - 2⁵ = 42140212606589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42140212606421) 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, 21070106303310 + 21070106303311.

It is an arithmetic number, because the mean of its divisors is an integer number (21070106303311).

Almost surely, 2^{42140212606621} is an apocalyptic number.

It is an amenable number.

42140212606621 is a deficient number, since it is larger than the sum of its proper divisors (1).

42140212606621 is an equidigital number, since it uses as much as digits as its factorization.

42140212606621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 42140212606621 in words is "forty-two trillion, one hundred forty billion, two hundred twelve million, six hundred six thousand, six hundred twenty-one".