43123042432 has 16 divisors (see below), whose sum is σ = 85909186350. Its totient is φ = 21561521152.

The previous prime is 43123042399. The next prime is 43123042439. The reversal of 43123042432 is 23424032134.

It can be written as a sum of positive squares in only one way, i.e., 23291643456 + 19831398976 = 152616^2 + 140824^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 43123042432.

It is not an unprimeable number, because it can be changed into a prime (43123042439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168449257 + ... + 168449512.

Almost surely, 2^43123042432 is an apocalyptic number.

It is an amenable number.

43123042432 is a deficient number, since it is larger than the sum of its proper divisors (42786143918).

43123042432 is an equidigital number, since it uses as much as digits as its factorization.

43123042432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336898783 (or 336898771 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 43123042432 its reverse (23424032134), we get a palindrome (66547074566).

The spelling of 43123042432 in words is "forty-three billion, one hundred twenty-three million, forty-two thousand, four hundred thirty-two".