43304144021 has 4 divisors (see below), whose sum is σ = 43304618700. Its totient is φ = 43303669344.

The previous prime is 43304144003. The next prime is 43304144041. The reversal of 43304144021 is 12044140334.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 27750562225 + 15553581796 = 166585^2 + 124714^2 .

It is a cyclic number.

It is not a de Polignac number, because 43304144021 - 2¹⁴ = 43304127637 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 (43304144041) 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, 52526 + ... + 298943.

It is an arithmetic number, because the mean of its divisors is an integer number (10826154675).

Almost surely, 2^43304144021 is an apocalyptic number.

It is an amenable number.

43304144021 is a deficient number, since it is larger than the sum of its proper divisors (474679).

43304144021 is a wasteful number, since it uses less digits than its factorization.

43304144021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474678.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 43304144021 its reverse (12044140334), we get a palindrome (55348284355).

The spelling of 43304144021 in words is "forty-three billion, three hundred four million, one hundred forty-four thousand, twenty-one".