42187214161 has 8 divisors (see below), whose sum is σ = 44670682440. Its totient is φ = 39703953408.

The previous prime is 42187214141. The next prime is 42187214177. The reversal of 42187214161 is 16141278124.

It is a happy number.

42187214161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2021041936 + 40166172225 = 44956^2 + 200415^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42187214161 - 2¹⁷ = 42187083089 is a prime.

It is a super-2 number, since 2×42187214161² (a number of 22 digits) contains 22 as substring.

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 42187214161.

It is not an unprimeable number, because it can be changed into a prime (42187214141) 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, 602785 + ... + 669121.

It is an arithmetic number, because the mean of its divisors is an integer number (5583835305).

Almost surely, 2^42187214161 is an apocalyptic number.

It is an amenable number.

42187214161 is a deficient number, since it is larger than the sum of its proper divisors (2483468279).

42187214161 is a wasteful number, since it uses less digits than its factorization.

42187214161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103763.

The product of its digits is 21504, while the sum is 37.

The spelling of 42187214161 in words is "forty-two billion, one hundred eighty-seven million, two hundred fourteen thousand, one hundred sixty-one".