42016613 has 2 divisors, whose sum is σ = 42016614. Its totient is φ = 42016612.

The previous prime is 42016603. The next prime is 42016627. The reversal of 42016613 is 31661024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42016324 + 289 = 6482^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 42016613 - 2²⁴ = 25239397 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 (42016603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21008306 + 21008307.

It is an arithmetic number, because the mean of its divisors is an integer number (21008307).

Almost surely, 2^42016613 is an apocalyptic number.

It is an amenable number.

42016613 is a deficient number, since it is larger than the sum of its proper divisors (1).

42016613 is an equidigital number, since it uses as much as digits as its factorization.

42016613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42016613 is about 6482.0222924640. The cubic root of 42016613 is about 347.6484895826.

Adding to 42016613 its reverse (31661024), we get a palindrome (73677637).

The spelling of 42016613 in words is "forty-two million, sixteen thousand, six hundred thirteen".