42113611 has 2 divisors, whose sum is σ = 42113612. Its totient is φ = 42113610.

The previous prime is 42113609. The next prime is 42113629. The reversal of 42113611 is 11631124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42113611 - 2¹ = 42113609 is a prime.

Together with 42113609, it forms a pair of twin primes.

It is a Chen prime.

It is the 6490-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (42113651) by changing a digit.

It is a nontrivial repunit in base 6489.

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, 21056805 + 21056806.

It is an arithmetic number, because the mean of its divisors is an integer number (21056806).

Almost surely, 2^42113611 is an apocalyptic number.

42113611 is a deficient number, since it is larger than the sum of its proper divisors (1).

42113611 is an equidigital number, since it uses as much as digits as its factorization.

42113611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 42113611 is about 6489.5000577857. The cubic root of 42113611 is about 347.9158068002.

Adding to 42113611 its reverse (11631124), we get a palindrome (53744735).

It can be divided in two parts, 42113 and 611, that added together give a palindrome (42724).

The spelling of 42113611 in words is "forty-two million, one hundred thirteen thousand, six hundred eleven".