42020335847899 has 2 divisors, whose sum is σ = 42020335847900. Its totient is φ = 42020335847898.

The previous prime is 42020335847891. The next prime is 42020335847911. The reversal of 42020335847899 is 99874853302024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42020335847899 - 2³ = 42020335847891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42020335847899.

It is not a weakly prime, because it can be changed into another prime (42020335847891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010167923949 + 21010167923950.

It is an arithmetic number, because the mean of its divisors is an integer number (21010167923950).

Almost surely, 2^{42020335847899} is an apocalyptic number.

42020335847899 is a deficient number, since it is larger than the sum of its proper divisors (1).

42020335847899 is an equidigital number, since it uses as much as digits as its factorization.

42020335847899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104509440, while the sum is 64.

The spelling of 42020335847899 in words is "forty-two trillion, twenty billion, three hundred thirty-five million, eight hundred forty-seven thousand, eight hundred ninety-nine".