42020321699 has 2 divisors, whose sum is σ = 42020321700. Its totient is φ = 42020321698.

The previous prime is 42020321627. The next prime is 42020321711. The reversal of 42020321699 is 99612302024.

It is a happy number.

42020321699 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42020321699 is a prime.

It is not a weakly prime, because it can be changed into another prime (42020321899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010160849 + 21010160850.

It is an arithmetic number, because the mean of its divisors is an integer number (21010160850).

Almost surely, 2^42020321699 is an apocalyptic number.

42020321699 is a deficient number, since it is larger than the sum of its proper divisors (1).

42020321699 is an equidigital number, since it uses as much as digits as its factorization.

42020321699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 42020321699 in words is "forty-two billion, twenty million, three hundred twenty-one thousand, six hundred ninety-nine".