42035316209 has 2 divisors, whose sum is σ = 42035316210. Its totient is φ = 42035316208.

The previous prime is 42035316187. The next prime is 42035316217. The reversal of 42035316209 is 90261353024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42016800400 + 18515809 = 204980^2 + 4303^2 .

It is a cyclic number.

It is not a de Polignac number, because 42035316209 - 2²⁰ = 42034267633 is a prime.

It is a super-3 number, since 3×42035316209³ (a number of 33 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42035316229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21017658104 + 21017658105.

It is an arithmetic number, because the mean of its divisors is an integer number (21017658105).

Almost surely, 2^42035316209 is an apocalyptic number.

It is an amenable number.

42035316209 is a deficient number, since it is larger than the sum of its proper divisors (1).

42035316209 is an equidigital number, since it uses as much as digits as its factorization.

42035316209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 42035316209 in words is "forty-two billion, thirty-five million, three hundred sixteen thousand, two hundred nine".