42571306913 has 2 divisors, whose sum is σ = 42571306914. Its totient is φ = 42571306912.

The previous prime is 42571306903. The next prime is 42571306927. The reversal of 42571306913 is 31960317524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39980802304 + 2590504609 = 199952^2 + 50897^2 .

It is a cyclic number.

It is not a de Polignac number, because 42571306913 - 2¹⁴ = 42571290529 is a prime.

It is not a weakly prime, because it can be changed into another prime (42571306903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21285653456 + 21285653457.

It is an arithmetic number, because the mean of its divisors is an integer number (21285653457).

Almost surely, 2^42571306913 is an apocalyptic number.

It is an amenable number.

42571306913 is a deficient number, since it is larger than the sum of its proper divisors (1).

42571306913 is an equidigital number, since it uses as much as digits as its factorization.

42571306913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 42571306913 in words is "forty-two billion, five hundred seventy-one million, three hundred six thousand, nine hundred thirteen".