43421035342420 has 24 divisors (see below), whose sum is σ = 91796148549000. Its totient is φ = 17251847597952.

The previous prime is 43421035342387. The next prime is 43421035342439. The reversal of 43421035342420 is 2424353012434.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8279637934096 + 35141397408324 = 2877436^2 + 5928018^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43421035342420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7285405635 + ... + 7285411594.

It is an arithmetic number, because the mean of its divisors is an integer number (3824839522875).

Almost surely, 2^{43421035342420} is an apocalyptic number.

It is an amenable number.

43421035342420 is an abundant number, since it is smaller than the sum of its proper divisors (48375113206580).

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

43421035342420 is a wasteful number, since it uses less digits than its factorization.

43421035342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14570817387 (or 14570817385 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 43421035342420 its reverse (2424353012434), we get a palindrome (45845388354854).

The spelling of 43421035342420 in words is "forty-three trillion, four hundred twenty-one billion, thirty-five million, three hundred forty-two thousand, four hundred twenty".