43420020144 has 80 divisors (see below), whose sum is σ = 119363788800. Its totient is φ = 13553464320.

The previous prime is 43420020143. The next prime is 43420020151. The reversal of 43420020144 is 44102002434.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (43420020143) 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, 28689 + ... + 296079.

It is an arithmetic number, because the mean of its divisors is an integer number (1492047360).

Almost surely, 2^43420020144 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 43420020144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59681894400).

43420020144 is an abundant number, since it is smaller than the sum of its proper divisors (75943768656).

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

43420020144 is a wasteful number, since it uses less digits than its factorization.

43420020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267618 (or 267612 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 43420020144 its reverse (44102002434), we get a palindrome (87522022578).

The spelling of 43420020144 in words is "forty-three billion, four hundred twenty million, twenty thousand, one hundred forty-four".