43132740 has 144 divisors (see below), whose sum is σ = 148925952. Its totient is φ = 9268224.

The previous prime is 43132729. The next prime is 43132759. The reversal of 43132740 is 4723134.

It is a self number, because there is not a number n which added to its sum of digits gives 43132740.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49549 + ... + 50411.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^43132740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43132740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74462976).

43132740 is an abundant number, since it is smaller than the sum of its proper divisors (105793212).

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

43132740 is a wasteful number, since it uses less digits than its factorization.

43132740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 43132740 is about 6567.5520553704. The cubic root of 43132740 is about 350.6999326696.

Adding to 43132740 its reverse (4723134), we get a palindrome (47855874).

The spelling of 43132740 in words is "forty-three million, one hundred thirty-two thousand, seven hundred forty".