42002009999 has 2 divisors, whose sum is σ = 42002010000. Its totient is φ = 42002009998.

The previous prime is 42002009993. The next prime is 42002010047. The reversal of 42002009999 is 99990020024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42002009999 - 2⁸ = 42002009743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42002009993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001004999 + 21001005000.

It is an arithmetic number, because the mean of its divisors is an integer number (21001005000).

Almost surely, 2^42002009999 is an apocalyptic number.

42002009999 is a deficient number, since it is larger than the sum of its proper divisors (1).

42002009999 is an equidigital number, since it uses as much as digits as its factorization.

42002009999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 42002009999 in words is "forty-two billion, two million, nine thousand, nine hundred ninety-nine".