43420433 has 16 divisors (see below), whose sum is σ = 50970624. Its totient is φ = 36216720.

The previous prime is 43420427. The next prime is 43420439. The reversal of 43420433 is 33402434.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43420427) and next prime (43420439).

It is a cyclic number.

It is not a de Polignac number, because 43420433 - 2¹⁶ = 43354897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43420399 and 43420408.

It is not an unprimeable number, because it can be changed into a prime (43420439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88916 + ... + 89402.

It is an arithmetic number, because the mean of its divisors is an integer number (3185664).

Almost surely, 2^43420433 is an apocalyptic number.

It is an amenable number.

43420433 is a deficient number, since it is larger than the sum of its proper divisors (7550191).

43420433 is a wasteful number, since it uses less digits than its factorization.

43420433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 43420433 is about 6589.4182596038. The cubic root of 43420433 is about 351.4779219210.

Adding to 43420433 its reverse (33402434), we get a palindrome (76822867).

The spelling of 43420433 in words is "forty-three million, four hundred twenty thousand, four hundred thirty-three".