43421433 has 8 divisors (see below), whose sum is σ = 63158496. Its totient is φ = 26316000.

The previous prime is 43421429. The next prime is 43421437. The reversal of 43421433 is 33412434.

It is an interprime number because it is at equal distance from previous prime (43421429) and next prime (43421437).

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

It is not a de Polignac number, because 43421433 - 2² = 43421429 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (43421437) 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, 657868 + ... + 657933.

It is an arithmetic number, because the mean of its divisors is an integer number (7894812).

Almost surely, 2^43421433 is an apocalyptic number.

It is an amenable number.

43421433 is a deficient number, since it is larger than the sum of its proper divisors (19737063).

43421433 is a wasteful number, since it uses less digits than its factorization.

43421433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315815.

The product of its digits is 3456, while the sum is 24.

The square root of 43421433 is about 6589.4941383994. The cubic root of 43421433 is about 351.4806201532.

Adding to 43421433 its reverse (33412434), we get a palindrome (76833867).

It can be divided in two parts, 4342 and 1433, that added together give a palindrome (5775).

The spelling of 43421433 in words is "forty-three million, four hundred twenty-one thousand, four hundred thirty-three".