43021203240 has 256 divisors, whose sum is σ = 135444234240. Its totient is φ = 10922240000.

The previous prime is 43021203227. The next prime is 43021203299. The reversal of 43021203240 is 4230212034.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37376665 + ... + 37377815.

It is an arithmetic number, because the mean of its divisors is an integer number (529079040).

Almost surely, 2^43021203240 is an apocalyptic number.

43021203240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43021203240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67722117120).

43021203240 is an abundant number, since it is smaller than the sum of its proper divisors (92423031000).

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

43021203240 is a wasteful number, since it uses less digits than its factorization.

43021203240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 43021203240 its reverse (4230212034), we get a palindrome (47251415274).

The spelling of 43021203240 in words is "forty-three billion, twenty-one million, two hundred three thousand, two hundred forty".