42016913 has 2 divisors, whose sum is σ = 42016914. Its totient is φ = 42016912.

The previous prime is 42016907. The next prime is 42016939. The reversal of 42016913 is 31961024.

It is an a-pointer prime, because the next prime (42016939) can be obtained adding 42016913 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38837824 + 3179089 = 6232^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 42016913 - 2¹⁰ = 42015889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42016943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21008456 + 21008457.

It is an arithmetic number, because the mean of its divisors is an integer number (21008457).

Almost surely, 2^42016913 is an apocalyptic number.

It is an amenable number.

42016913 is a deficient number, since it is larger than the sum of its proper divisors (1).

42016913 is an equidigital number, since it uses as much as digits as its factorization.

42016913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 42016913 is about 6482.0454333490. The cubic root of 42016913 is about 347.6493169879.

Adding to 42016913 its reverse (31961024), we get a palindrome (73977937).

The spelling of 42016913 in words is "forty-two million, sixteen thousand, nine hundred thirteen".