42316709 has 2 divisors, whose sum is σ = 42316710. Its totient is φ = 42316708.

The previous prime is 42316699. The next prime is 42316727. The reversal of 42316709 is 90761324.

42316709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 2184484 = 6335^2 + 1478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42316709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42316759) 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, 21158354 + 21158355.

It is an arithmetic number, because the mean of its divisors is an integer number (21158355).

Almost surely, 2^42316709 is an apocalyptic number.

It is an amenable number.

42316709 is a deficient number, since it is larger than the sum of its proper divisors (1).

42316709 is an equidigital number, since it uses as much as digits as its factorization.

42316709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 42316709 is about 6505.1294376054. The cubic root of 42316709 is about 348.4741988560.

The spelling of 42316709 in words is "forty-two million, three hundred sixteen thousand, seven hundred nine".