4320115421 has 4 divisors (see below), whose sum is σ = 4343983644. Its totient is φ = 4296247200.

The previous prime is 4320115409. The next prime is 4320115427. The reversal of 4320115421 is 1245110234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1245110234 = 2 ⋅622555117.

It can be written as a sum of positive squares in 2 ways, for example, as 376903396 + 3943212025 = 19414^2 + 62795^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320115421 - 2¹⁴ = 4320099037 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 (4320115427) 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, 11933840 + ... + 11934201.

It is an arithmetic number, because the mean of its divisors is an integer number (1085995911).

Almost surely, 2^4320115421 is an apocalyptic number.

It is an amenable number.

4320115421 is a deficient number, since it is larger than the sum of its proper divisors (23868223).

4320115421 is a wasteful number, since it uses less digits than its factorization.

4320115421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23868222.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4320115421 is about 65727.5849320512. The cubic root of 4320115421 is about 1628.6650744942.

Adding to 4320115421 its reverse (1245110234), we get a palindrome (5565225655).

The spelling of 4320115421 in words is "four billion, three hundred twenty million, one hundred fifteen thousand, four hundred twenty-one".