43040424 has 48 divisors (see below), whose sum is σ = 125172000. Its totient is φ = 12296928.

The previous prime is 43040423. The next prime is 43040449. The reversal of 43040424 is 42404034.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 43040424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43040423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17124 + ... + 19475.

It is an arithmetic number, because the mean of its divisors is an integer number (2607750).

Almost surely, 2^43040424 is an apocalyptic number.

It is an amenable number.

43040424 is an abundant number, since it is smaller than the sum of its proper divisors (82131576).

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

43040424 is a wasteful number, since it uses less digits than its factorization.

43040424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36622 (or 36611 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 43040424 is about 6560.5201013334. The cubic root of 43040424 is about 350.4495556567.

Adding to 43040424 its reverse (42404034), we get a palindrome (85444458).

The spelling of 43040424 in words is "forty-three million, forty thousand, four hundred twenty-four".