42003317 has 2 divisors, whose sum is σ = 42003318. Its totient is φ = 42003316.

The previous prime is 42003271. The next prime is 42003323. The reversal of 42003317 is 71330024.

42003317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21446161 + 20557156 = 4631^2 + 4534^2 .

It is a cyclic number.

It is not a de Polignac number, because 42003317 - 2⁶ = 42003253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42003337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21001658 + 21001659.

It is an arithmetic number, because the mean of its divisors is an integer number (21001659).

Almost surely, 2^42003317 is an apocalyptic number.

It is an amenable number.

42003317 is a deficient number, since it is larger than the sum of its proper divisors (1).

42003317 is an equidigital number, since it uses as much as digits as its factorization.

42003317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 42003317 is about 6480.9966054612. The cubic root of 42003317 is about 347.6118150258.

The spelling of 42003317 in words is "forty-two million, three thousand, three hundred seventeen".