42709313 has 2 divisors, whose sum is σ = 42709314. Its totient is φ = 42709312.

The previous prime is 42709309. The next prime is 42709327. The reversal of 42709313 is 31390724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42601729 + 107584 = 6527^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 42709313 - 2² = 42709309 is a prime.

It is not a weakly prime, because it can be changed into another prime (42709343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21354656 + 21354657.

It is an arithmetic number, because the mean of its divisors is an integer number (21354657).

Almost surely, 2^42709313 is an apocalyptic number.

It is an amenable number.

42709313 is a deficient number, since it is larger than the sum of its proper divisors (1).

42709313 is an equidigital number, since it uses as much as digits as its factorization.

42709313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 42709313 is about 6535.2362619878. The cubic root of 42709313 is about 349.5485690138.

The spelling of 42709313 in words is "forty-two million, seven hundred nine thousand, three hundred thirteen".