43212940 has 24 divisors (see below), whose sum is σ = 91163520. Its totient is φ = 17205888.

The previous prime is 43212931. The next prime is 43212947. The reversal of 43212940 is 4921234.

It is not an unprimeable number, because it can be changed into a prime (43212947) 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, 385 + ... + 9304.

It is an arithmetic number, because the mean of its divisors is an integer number (3798480).

Almost surely, 2^43212940 is an apocalyptic number.

It is an amenable number.

43212940 is an abundant number, since it is smaller than the sum of its proper divisors (47950580).

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

43212940 is a wasteful number, since it uses less digits than its factorization.

43212940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9921 (or 9919 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 43212940 is about 6573.6549955105. The cubic root of 43212940 is about 350.9171591525.

The spelling of 43212940 in words is "forty-three million, two hundred twelve thousand, nine hundred forty".