43121440304 has 80 divisors (see below), whose sum is σ = 89047604160. Its totient is φ = 20228705280.

The previous prime is 43121440289. The next prime is 43121440309. The reversal of 43121440304 is 40304412134.

It is a super-2 number, since 2×43121440304² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43121440309) 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, 33093317 + ... + 33094619.

It is an arithmetic number, because the mean of its divisors is an integer number (1113095052).

Almost surely, 2^43121440304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43121440304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44523802080).

43121440304 is an abundant number, since it is smaller than the sum of its proper divisors (45926163856).

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

43121440304 is a wasteful number, since it uses less digits than its factorization.

43121440304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 43121440304 its reverse (40304412134), we get a palindrome (83425852438).

The spelling of 43121440304 in words is "forty-three billion, one hundred twenty-one million, four hundred forty thousand, three hundred four".