5243420321 has 8 divisors (see below), whose sum is σ = 5431697664. Its totient is φ = 5056338960.

The previous prime is 5243420297. The next prime is 5243420363. The reversal of 5243420321 is 1230243425.

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

It is a cyclic number.

It is not a de Polignac number, because 5243420321 - 2¹⁴ = 5243403937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5243420521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290066 + ... + 307611.

It is an arithmetic number, because the mean of its divisors is an integer number (678962208).

Almost surely, 2^5243420321 is an apocalyptic number.

It is an amenable number.

5243420321 is a deficient number, since it is larger than the sum of its proper divisors (188277343).

5243420321 is a wasteful number, since it uses less digits than its factorization.

5243420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597991.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 5243420321 is about 72411.4653974079. The cubic root of 5243420321 is about 1737.2869509904.

Adding to 5243420321 its reverse (1230243425), we get a palindrome (6473663746).

The spelling of 5243420321 in words is "five billion, two hundred forty-three million, four hundred twenty thousand, three hundred twenty-one".