43123430020 has 96 divisors (see below), whose sum is σ = 103612836096. Its totient is φ = 14922969600.

The previous prime is 43123429991. The next prime is 43123430027. The reversal of 43123430020 is 2003432134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 43123429973 and 43123430000.

It is not an unprimeable number, because it can be changed into a prime (43123430027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 975190 + ... + 1018450.

It is an arithmetic number, because the mean of its divisors is an integer number (1079300376).

Almost surely, 2^43123430020 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 43123430020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51806418048).

43123430020 is an abundant number, since it is smaller than the sum of its proper divisors (60489406076).

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

43123430020 is a wasteful number, since it uses less digits than its factorization.

43123430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43501 (or 43499 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 43123430020 its reverse (2003432134), we get a palindrome (45126862154).

The spelling of 43123430020 in words is "forty-three billion, one hundred twenty-three million, four hundred thirty thousand, twenty".