43125140 has 36 divisors (see below), whose sum is σ = 91959924. Its totient is φ = 16987776.

The previous prime is 43125139. The next prime is 43125149. The reversal of 43125140 is 4152134.

It can be written as a sum of positive squares in 2 ways, for example, as 5400976 + 37724164 = 2324^2 + 6142^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43125149) 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, 137624 + ... + 137936.

Almost surely, 2^43125140 is an apocalyptic number.

It is an amenable number.

43125140 is an abundant number, since it is smaller than the sum of its proper divisors (48834784).

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

43125140 is a wasteful number, since it uses less digits than its factorization.

43125140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 43125140 is about 6566.9734276910. The cubic root of 43125140 is about 350.6793336532.

Adding to 43125140 its reverse (4152134), we get a palindrome (47277274).

The spelling of 43125140 in words is "forty-three million, one hundred twenty-five thousand, one hundred forty".