42116181 has 8 divisors (see below), whose sum is σ = 56189184. Its totient is φ = 28060320.

The previous prime is 42116167. The next prime is 42116189. The reversal of 42116181 is 18161124.

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

It is not a de Polignac number, because 42116181 - 2¹¹ = 42114133 is a prime.

It is a super-2 number, since 2×42116181² = 3547545404049522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42116189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3441 + ... + 9801.

It is an arithmetic number, because the mean of its divisors is an integer number (7023648).

Almost surely, 2^42116181 is an apocalyptic number.

It is an amenable number.

42116181 is a deficient number, since it is larger than the sum of its proper divisors (14073003).

42116181 is a wasteful number, since it uses less digits than its factorization.

42116181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571.

The product of its digits is 384, while the sum is 24.

The square root of 42116181 is about 6489.6980669366. The cubic root of 42116181 is about 347.9228838902.

The spelling of 42116181 in words is "forty-two million, one hundred sixteen thousand, one hundred eighty-one".