43530140 has 24 divisors (see below), whose sum is σ = 96225360. Its totient is φ = 16495488.

The previous prime is 43530133. The next prime is 43530161. The reversal of 43530140 is 4103534.

43530140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56897 + ... + 57656.

It is an arithmetic number, because the mean of its divisors is an integer number (4009390).

Almost surely, 2^43530140 is an apocalyptic number.

It is an amenable number.

43530140 is an abundant number, since it is smaller than the sum of its proper divisors (52695220).

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

43530140 is a wasteful number, since it uses less digits than its factorization.

43530140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114581 (or 114579 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 43530140 is about 6597.7374909889. The cubic root of 43530140 is about 351.7736901885.

Adding to 43530140 its reverse (4103534), we get a palindrome (47633674).

The spelling of 43530140 in words is "forty-three million, five hundred thirty thousand, one hundred forty".