4323242021 has 6 divisors (see below), whose sum is σ = 5029077510. Its totient is φ = 3705635976.

The previous prime is 4323241981. The next prime is 4323242029. The reversal of 4323242021 is 1202423234.

It can be written as a sum of positive squares in only one way, i.e., 3293152996 + 1030089025 = 57386^2 + 32095^2 .

It is not a de Polignac number, because 4323242021 - 2¹⁸ = 4322979877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4323242029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44114666 + ... + 44114763.

It is an arithmetic number, because the mean of its divisors is an integer number (838179585).

Almost surely, 2^4323242021 is an apocalyptic number.

It is an amenable number.

4323242021 is a deficient number, since it is larger than the sum of its proper divisors (705835489).

4323242021 is an equidigital number, since it uses as much as digits as its factorization.

4323242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88229443 (or 88229436 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4323242021 is about 65751.3651645348. The cubic root of 4323242021 is about 1629.0578846982.

Adding to 4323242021 its reverse (1202423234), we get a palindrome (5525665255).

The spelling of 4323242021 in words is "four billion, three hundred twenty-three million, two hundred forty-two thousand, twenty-one".