42004304009 has 2 divisors, whose sum is σ = 42004304010. Its totient is φ = 42004304008.

The previous prime is 42004304003. The next prime is 42004304077. The reversal of 42004304009 is 90040340024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35915935225 + 6088368784 = 189515^2 + 78028^2 .

It is a cyclic number.

It is not a de Polignac number, because 42004304009 - 2¹⁶ = 42004238473 is a prime.

It is not a weakly prime, because it can be changed into another prime (42004304003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21002152004 + 21002152005.

It is an arithmetic number, because the mean of its divisors is an integer number (21002152005).

Almost surely, 2^42004304009 is an apocalyptic number.

It is an amenable number.

42004304009 is a deficient number, since it is larger than the sum of its proper divisors (1).

42004304009 is an equidigital number, since it uses as much as digits as its factorization.

42004304009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The spelling of 42004304009 in words is "forty-two billion, four million, three hundred four thousand, nine".