43432423 has 4 divisors (see below), whose sum is σ = 45718360. Its totient is φ = 41146488.

The previous prime is 43432421. The next prime is 43432447. The reversal of 43432423 is 32423434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32423434 = 2 ⋅16211717.

It is a cyclic number.

It is not a de Polignac number, because 43432423 - 2¹ = 43432421 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 (43432421) 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, 1142940 + ... + 1142977.

It is an arithmetic number, because the mean of its divisors is an integer number (11429590).

Almost surely, 2^43432423 is an apocalyptic number.

43432423 is a deficient number, since it is larger than the sum of its proper divisors (2285937).

43432423 is a wasteful number, since it uses less digits than its factorization.

43432423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285936.

The product of its digits is 6912, while the sum is 25.

The square root of 43432423 is about 6590.3279888030. The cubic root of 43432423 is about 351.5102709954.

Adding to 43432423 its reverse (32423434), we get a palindrome (75855857).

The spelling of 43432423 in words is "forty-three million, four hundred thirty-two thousand, four hundred twenty-three".