43300342421 has 4 divisors (see below), whose sum is σ = 49486105632. Its totient is φ = 37114579212.

The previous prime is 43300342399. The next prime is 43300342489. The reversal of 43300342421 is 12424300334.

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 43300342421 - 2²² = 43296148117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43300344421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3092881595 + ... + 3092881608.

It is an arithmetic number, because the mean of its divisors is an integer number (12371526408).

Almost surely, 2^43300342421 is an apocalyptic number.

It is an amenable number.

43300342421 is a deficient number, since it is larger than the sum of its proper divisors (6185763211).

43300342421 is an equidigital number, since it uses as much as digits as its factorization.

43300342421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6185763210.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43300342421 its reverse (12424300334), we get a palindrome (55724642755).

The spelling of 43300342421 in words is "forty-three billion, three hundred million, three hundred forty-two thousand, four hundred twenty-one".