43130444240 has 40 divisors (see below), whose sum is σ = 107991999528. Its totient is φ = 15925086720.

The previous prime is 43130444233. The next prime is 43130444249. The reversal of 43130444240 is 4244403134.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 625200016 + 42505244224 = 25004^2 + 206168^2 .

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 (43130444249) 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, 20734751 + ... + 20736830.

Almost surely, 2^43130444240 is an apocalyptic number.

43130444240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43130444240 is an abundant number, since it is smaller than the sum of its proper divisors (64861555288).

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

43130444240 is a wasteful number, since it uses less digits than its factorization.

43130444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41471607 (or 41471601 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 43130444240 its reverse (4244403134), we get a palindrome (47374847374).

The spelling of 43130444240 in words is "forty-three billion, one hundred thirty million, four hundred forty-four thousand, two hundred forty".