42181214 has 8 divisors (see below), whose sum is σ = 63755208. Its totient is φ = 20929480.

The previous prime is 42181213. The next prime is 42181247. The reversal of 42181214 is 41218124.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42181214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42181213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80237 + ... + 80760.

It is an arithmetic number, because the mean of its divisors is an integer number (7969401).

Almost surely, 2^42181214 is an apocalyptic number.

42181214 is a deficient number, since it is larger than the sum of its proper divisors (21573994).

42181214 is a wasteful number, since it uses less digits than its factorization.

42181214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161130.

The product of its digits is 512, while the sum is 23.

The square root of 42181214 is about 6494.7066138510. The cubic root of 42181214 is about 348.1018715718.

Adding to 42181214 its reverse (41218124), we get a palindrome (83399338).

The spelling of 42181214 in words is "forty-two million, one hundred eighty-one thousand, two hundred fourteen".