43425440 has 24 divisors (see below), whose sum is σ = 102592980. Its totient is φ = 17370112.

The previous prime is 43425433. The next prime is 43425461. The reversal of 43425440 is 4452434.

It can be written as a sum of positive squares in 2 ways, for example, as 43191184 + 234256 = 6572^2 + 484^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135545 + ... + 135864.

Almost surely, 2^43425440 is an apocalyptic number.

43425440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43425440 is an abundant number, since it is smaller than the sum of its proper divisors (59167540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43425440 is a wasteful number, since it uses less digits than its factorization.

43425440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271424 (or 271416 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 43425440 is about 6589.7981759687. The cubic root of 43425440 is about 351.4914315538.

Adding to 43425440 its reverse (4452434), we get a palindrome (47877874).

The spelling of 43425440 in words is "forty-three million, four hundred twenty-five thousand, four hundred forty".