43432012240 has 40 divisors (see below), whose sum is σ = 101114028288. Its totient is φ = 17349648000.

The previous prime is 43432012231. The next prime is 43432012241. The reversal of 43432012240 is 4221023434.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43432012241) 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, 301372 + ... + 421531.

Almost surely, 2^43432012240 is an apocalyptic number.

43432012240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43432012240 is an abundant number, since it is smaller than the sum of its proper divisors (57682016048).

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

43432012240 is a wasteful number, since it uses less digits than its factorization.

43432012240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723667 (or 723661 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 43432012240 its reverse (4221023434), we get a palindrome (47653035674).

The spelling of 43432012240 in words is "forty-three billion, four hundred thirty-two million, twelve thousand, two hundred forty".