4224921 has 8 divisors (see below), whose sum is σ = 5725824. Its totient is φ = 2770320.

The previous prime is 4224917. The next prime is 4224947. The reversal of 4224921 is 1294224.

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

It is not a de Polignac number, because 4224921 - 2² = 4224917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4224891 and 4224900.

It is not an unprimeable number, because it can be changed into a prime (4224901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11361 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (715728).

Almost surely, 2^4224921 is an apocalyptic number.

It is an amenable number.

4224921 is a deficient number, since it is larger than the sum of its proper divisors (1500903).

4224921 is a wasteful number, since it uses less digits than its factorization.

4224921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23151.

The product of its digits is 1152, while the sum is 24.

The square root of 4224921 is about 2055.4612621015. The cubic root of 4224921 is about 161.6613486518.

The spelling of 4224921 in words is "four million, two hundred twenty-four thousand, nine hundred twenty-one".