43130540 has 24 divisors (see below), whose sum is σ = 93698640. Its totient is φ = 16657088.

The previous prime is 43130539. The next prime is 43130573. The reversal of 43130540 is 4503134.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36602 + ... + 37761.

It is an arithmetic number, because the mean of its divisors is an integer number (3904110).

Almost surely, 2^43130540 is an apocalyptic number.

It is an amenable number.

43130540 is an abundant number, since it is smaller than the sum of its proper divisors (50568100).

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

43130540 is a wasteful number, since it uses less digits than its factorization.

43130540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74401 (or 74399 counting only the distinct ones).

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

The square root of 43130540 is about 6567.3845631271. The cubic root of 43130540 is about 350.6939700453.

Adding to 43130540 its reverse (4503134), we get a palindrome (47633674).

The spelling of 43130540 in words is "forty-three million, one hundred thirty thousand, five hundred forty".