4320421243 has 4 divisors (see below), whose sum is σ = 4320620008. Its totient is φ = 4320222480.

The previous prime is 4320421201. The next prime is 4320421249. The reversal of 4320421243 is 3421240234.

It is a happy number.

4320421243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4320421243 - 2²¹ = 4318324091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4320421249) 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, 62121 + ... + 111802.

It is an arithmetic number, because the mean of its divisors is an integer number (1080155002).

Almost surely, 2^4320421243 is an apocalyptic number.

4320421243 is a deficient number, since it is larger than the sum of its proper divisors (198765).

4320421243 is a wasteful number, since it uses less digits than its factorization.

4320421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198764.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 4320421243 is about 65729.9113265795. The cubic root of 4320421243 is about 1628.7035047836.

Adding to 4320421243 its reverse (3421240234), we get a palindrome (7741661477).

The spelling of 4320421243 in words is "four billion, three hundred twenty million, four hundred twenty-one thousand, two hundred forty-three".