42105115161 has 12 divisors (see below), whose sum is σ = 61675099200. Its totient is φ = 27674723160.

The previous prime is 42105115141. The next prime is 42105115201. The reversal of 42105115161 is 16151150124.

42105115161 is a `hidden beast` number, since 42 + 1 + 0 + 511 + 51 + 61 = 666.

It is not a de Polignac number, because 42105115161 - 2⁶ = 42105115097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42105115141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32945461 + ... + 32946738.

It is an arithmetic number, because the mean of its divisors is an integer number (5139591600).

Almost surely, 2^42105115161 is an apocalyptic number.

It is an amenable number.

42105115161 is a deficient number, since it is larger than the sum of its proper divisors (19569984039).

42105115161 is a wasteful number, since it uses less digits than its factorization.

42105115161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65892276 (or 65892273 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 42105115161 its reverse (16151150124), we get a palindrome (58256265285).

The spelling of 42105115161 in words is "forty-two billion, one hundred five million, one hundred fifteen thousand, one hundred sixty-one".