43002121304440 has 64 divisors (see below), whose sum is σ = 102447172366560. Its totient is φ = 16188885012480.

The previous prime is 43002121304357. The next prime is 43002121304447. The reversal of 43002121304440 is 4440312120034.

It is a junction number, because it is equal to n+sod(n) for n = 43002121304399 and 43002121304408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43002121304447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98220420 + ... + 98657260.

Almost surely, 2^{43002121304440} is an apocalyptic number.

43002121304440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43002121304440 is an abundant number, since it is smaller than the sum of its proper divisors (59445051062120).

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

43002121304440 is a wasteful number, since it uses less digits than its factorization.

43002121304440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581632 (or 581628 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 43002121304440 its reverse (4440312120034), we get a palindrome (47442433424474).

The spelling of 43002121304440 in words is "forty-three trillion, two billion, one hundred twenty-one million, three hundred four thousand, four hundred forty".