4242181 has 4 divisors (see below), whose sum is σ = 4275712. Its totient is φ = 4208652.

The previous prime is 4242169. The next prime is 4242191. The reversal of 4242181 is 1812424.

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 4242181 - 2¹³ = 4233989 is a prime.

It is a super-2 number, since 2×4242181² = 35992199273522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242131) 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, 16575 + ... + 16828.

It is an arithmetic number, because the mean of its divisors is an integer number (1068928).

Almost surely, 2^4242181 is an apocalyptic number.

It is an amenable number.

4242181 is a deficient number, since it is larger than the sum of its proper divisors (33531).

4242181 is a wasteful number, since it uses less digits than its factorization.

4242181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33530.

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

The square root of 4242181 is about 2059.6555537274. The cubic root of 4242181 is about 161.8811936927.

The spelling of 4242181 in words is "four million, two hundred forty-two thousand, one hundred eighty-one".