42161111171 has 8 divisors (see below), whose sum is σ = 44711934624. Its totient is φ = 39618149760.

The previous prime is 42161111141. The next prime is 42161111189. The reversal of 42161111171 is 17111116124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42161111171 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42161111171.

It is not an unprimeable number, because it can be changed into a prime (42161111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954460 + ... + 1975913.

It is an arithmetic number, because the mean of its divisors is an integer number (5588991828).

Almost surely, 2^42161111171 is an apocalyptic number.

42161111171 is a deficient number, since it is larger than the sum of its proper divisors (2550823453).

42161111171 is a wasteful number, since it uses less digits than its factorization.

42161111171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931021.

The product of its digits is 336, while the sum is 26.

Adding to 42161111171 its reverse (17111116124), we get a palindrome (59272227295).

The spelling of 42161111171 in words is "forty-two billion, one hundred sixty-one million, one hundred eleven thousand, one hundred seventy-one".