43234312420 has 48 divisors (see below), whose sum is σ = 99378983088. Its totient is φ = 15701736960.

The previous prime is 43234312393. The next prime is 43234312423. The reversal of 43234312420 is 2421343234.

It can be written as a sum of positive squares in 8 ways, for example, as 1448411364 + 41785901056 = 38058^2 + 204416^2 .

It is not an unprimeable number, because it can be changed into a prime (43234312423) 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, 1347139 + ... + 1378858.

It is an arithmetic number, because the mean of its divisors is an integer number (2070395481).

Almost surely, 2^43234312420 is an apocalyptic number.

It is an amenable number.

43234312420 is an abundant number, since it is smaller than the sum of its proper divisors (56144670668).

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

43234312420 is a wasteful number, since it uses less digits than its factorization.

43234312420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726080 (or 2726078 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 43234312420 its reverse (2421343234), we get a palindrome (45655655654).

The spelling of 43234312420 in words is "forty-three billion, two hundred thirty-four million, three hundred twelve thousand, four hundred twenty".