43425423 has 8 divisors (see below), whose sum is σ = 64334000. Its totient is φ = 28950264.

The previous prime is 43425419. The next prime is 43425433. The reversal of 43425423 is 32452434.

It is not a de Polignac number, because 43425423 - 2² = 43425419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1608349 = 43425423 / (4 + 3 + 4 + 2 + 5 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43425433) 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, 804148 + ... + 804201.

It is an arithmetic number, because the mean of its divisors is an integer number (8041750).

Almost surely, 2^43425423 is an apocalyptic number.

43425423 is a deficient number, since it is larger than the sum of its proper divisors (20908577).

43425423 is a wasteful number, since it uses less digits than its factorization.

43425423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608358 (or 1608352 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 43425423 is about 6589.7968860960. The cubic root of 43425423 is about 351.4913856870.

Adding to 43425423 its reverse (32452434), we get a palindrome (75877857).

The spelling of 43425423 in words is "forty-three million, four hundred twenty-five thousand, four hundred twenty-three".