42716813 has 2 divisors, whose sum is σ = 42716814. Its totient is φ = 42716812.

The previous prime is 42716789. The next prime is 42716827. The reversal of 42716813 is 31861724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39664804 + 3052009 = 6298^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 42716813 - 2²² = 38522509 is a prime.

It is a super-2 number, since 2×42716813² = 3649452225753938, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2588513 and since 42716813 and 2588513 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42716813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42716213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21358406 + 21358407.

It is an arithmetic number, because the mean of its divisors is an integer number (21358407).

Almost surely, 2^42716813 is an apocalyptic number.

It is an amenable number.

42716813 is a deficient number, since it is larger than the sum of its proper divisors (1).

42716813 is an equidigital number, since it uses as much as digits as its factorization.

42716813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 42716813 is about 6535.8100492594. The cubic root of 42716813 is about 349.5690287265.

The spelling of 42716813 in words is "forty-two million, seven hundred sixteen thousand, eight hundred thirteen".