43442040420 has 192 divisors, whose sum is σ = 144952416000. Its totient is φ = 10767624192.

The previous prime is 43442040409. The next prime is 43442040457. The reversal of 43442040420 is 2404024434.

It is a happy number.

43442040420 is a `hidden beast` number, since 4 + 34 + 4 + 204 + 0 + 420 = 666.

43442040420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 503836 + ... + 583724.

It is an arithmetic number, because the mean of its divisors is an integer number (754960500).

Almost surely, 2^43442040420 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 43442040420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72476208000).

43442040420 is an abundant number, since it is smaller than the sum of its proper divisors (101510375580).

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

43442040420 is a wasteful number, since it uses less digits than its factorization.

43442040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79979 (or 79971 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 43442040420 its reverse (2404024434), we get a palindrome (45846064854).

The spelling of 43442040420 in words is "forty-three billion, four hundred forty-two million, forty thousand, four hundred twenty".