2442181 has 4 divisors (see below), whose sum is σ = 2791072. Its totient is φ = 2093292.

The previous prime is 2442179. The next prime is 2442191. The reversal of 2442181 is 1812442.

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 2442181 - 2¹ = 2442179 is a prime.

It is a super-2 number, since 2×2442181² = 11928496073522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2442151) 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, 174435 + ... + 174448.

It is an arithmetic number, because the mean of its divisors is an integer number (697768).

2^2442181 is an apocalyptic number.

It is an amenable number.

2442181 is a deficient number, since it is larger than the sum of its proper divisors (348891).

2442181 is an equidigital number, since it uses as much as digits as its factorization.

2442181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348890.

The product of its digits is 512, while the sum is 22.

The square root of 2442181 is about 1562.7479003345. The cubic root of 2442181 is about 134.6664100192. Note that the first 3 decimals are identical.

The spelling of 2442181 in words is "two million, four hundred forty-two thousand, one hundred eighty-one".