42105611 has 2 divisors, whose sum is σ = 42105612. Its totient is φ = 42105610.

The previous prime is 42105607. The next prime is 42105619. The reversal of 42105611 is 11650124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42105611 - 2² = 42105607 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42105619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21052805 + 21052806.

It is an arithmetic number, because the mean of its divisors is an integer number (21052806).

Almost surely, 2^42105611 is an apocalyptic number.

42105611 is a deficient number, since it is larger than the sum of its proper divisors (1).

42105611 is an equidigital number, since it uses as much as digits as its factorization.

42105611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 42105611 is about 6488.8836482095. The cubic root of 42105611 is about 347.8937751051.

Adding to 42105611 its reverse (11650124), we get a palindrome (53755735).

The spelling of 42105611 in words is "forty-two million, one hundred five thousand, six hundred eleven".