42161000111 has 2 divisors, whose sum is σ = 42161000112. Its totient is φ = 42161000110.

The previous prime is 42161000107. The next prime is 42161000137. The reversal of 42161000111 is 11100016124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42161000111 - 2² = 42161000107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42161000111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42161000191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21080500055 + 21080500056.

It is an arithmetic number, because the mean of its divisors is an integer number (21080500056).

Almost surely, 2^42161000111 is an apocalyptic number.

42161000111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42161000111 is an equidigital number, since it uses as much as digits as its factorization.

42161000111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 42161000111 its reverse (11100016124), we get a palindrome (53261016235).

The spelling of 42161000111 in words is "forty-two billion, one hundred sixty-one million, one hundred eleven", and thus it is an aban number.