4323021 has 4 divisors (see below), whose sum is σ = 5764032. Its totient is φ = 2882012.

The previous prime is 4322963. The next prime is 4323023. The reversal of 4323021 is 1203234.

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 4323021 - 2⁹ = 4322509 is a prime.

It is a D-number.

4323021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4323023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720501 + ... + 720506.

It is an arithmetic number, because the mean of its divisors is an integer number (1441008).

Almost surely, 2^4323021 is an apocalyptic number.

It is an amenable number.

4323021 is a deficient number, since it is larger than the sum of its proper divisors (1441011).

4323021 is a wasteful number, since it uses less digits than its factorization.

4323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441010.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 4323021 is about 2079.1875817251. The cubic root of 4323021 is about 162.9030122960.

Adding to 4323021 its reverse (1203234), we get a palindrome (5526255).

The spelling of 4323021 in words is "four million, three hundred twenty-three thousand, twenty-one".