218427241 has 4 divisors (see below), whose sum is σ = 219998800. Its totient is φ = 216855684.

The previous prime is 218427239. The next prime is 218427277. The reversal of 218427241 is 142724812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 218427241 - 2¹ = 218427239 is a prime.

It is a super-2 number, since 2×218427241² = 95420919221744162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218427221) 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, 785571 + ... + 785848.

It is an arithmetic number, because the mean of its divisors is an integer number (54999700).

Almost surely, 2^218427241 is an apocalyptic number.

It is an amenable number.

218427241 is a deficient number, since it is larger than the sum of its proper divisors (1571559).

218427241 is a wasteful number, since it uses less digits than its factorization.

218427241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571558.

The product of its digits is 7168, while the sum is 31.

The square root of 218427241 is about 14779.2841842898. The cubic root of 218427241 is about 602.2390791837.

The spelling of 218427241 in words is "two hundred eighteen million, four hundred twenty-seven thousand, two hundred forty-one".