4024421 has 4 divisors (see below), whose sum is σ = 4072992. Its totient is φ = 3975852.

The previous prime is 4024411. The next prime is 4024429. The reversal of 4024421 is 1244204.

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 4024421 - 2⁶ = 4024357 is a prime.

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 4024421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4024429) 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, 24161 + ... + 24326.

It is an arithmetic number, because the mean of its divisors is an integer number (1018248).

Almost surely, 2^4024421 is an apocalyptic number.

It is an amenable number.

4024421 is a deficient number, since it is larger than the sum of its proper divisors (48571).

4024421 is an equidigital number, since it uses as much as digits as its factorization.

4024421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48570.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4024421 is about 2006.0959598185. The cubic root of 4024421 is about 159.0624993278.

Adding to 4024421 its reverse (1244204), we get a palindrome (5268625).

The spelling of 4024421 in words is "four million, twenty-four thousand, four hundred twenty-one".