43421303 has 4 divisors (see below), whose sum is σ = 43538088. Its totient is φ = 43304520.

The previous prime is 43421291. The next prime is 43421317. The reversal of 43421303 is 30312434.

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 43421303 - 2⁸ = 43421047 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 (43421393) 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, 57833 + ... + 58578.

It is an arithmetic number, because the mean of its divisors is an integer number (10884522).

Almost surely, 2^43421303 is an apocalyptic number.

43421303 is a deficient number, since it is larger than the sum of its proper divisors (116785).

43421303 is a wasteful number, since it uses less digits than its factorization.

43421303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116784.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43421303 is about 6589.4842742054. The cubic root of 43421303 is about 351.4802693853.

Adding to 43421303 its reverse (30312434), we get a palindrome (73733737).

The spelling of 43421303 in words is "forty-three million, four hundred twenty-one thousand, three hundred three".