43121424 has 40 divisors (see below), whose sum is σ = 112974912. Its totient is φ = 14170240.

The previous prime is 43121423. The next prime is 43121459. The reversal of 43121424 is 42412134.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 43121424.

It is not an unprimeable number, because it can be changed into a prime (43121423) 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, 2919 + ... + 9734.

Almost surely, 2^43121424 is an apocalyptic number.

It is an amenable number.

43121424 is an abundant number, since it is smaller than the sum of its proper divisors (69853488).

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

43121424 is a wasteful number, since it uses less digits than its factorization.

43121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12735 (or 12729 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 43121424 is about 6566.6904906505. The cubic root of 43121424 is about 350.6692609375.

Adding to 43121424 its reverse (42412134), we get a palindrome (85533558).

The spelling of 43121424 in words is "forty-three million, one hundred twenty-one thousand, four hundred twenty-four".