43001200043421 has 32 divisors (see below), whose sum is σ = 57771141120000. Its totient is φ = 28450169561088.

The previous prime is 43001200043407. The next prime is 43001200043447. The reversal of 43001200043421 is 12434000210034.

It is not a de Polignac number, because 43001200043421 - 2⁷ = 43001200043293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43001200043391 and 43001200043400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43001200063421) 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, 528171165 + ... + 528252573.

It is an arithmetic number, because the mean of its divisors is an integer number (1805348160000).

Almost surely, 2^{43001200043421} is an apocalyptic number.

It is an amenable number.

43001200043421 is a deficient number, since it is larger than the sum of its proper divisors (14769941076579).

43001200043421 is a wasteful number, since it uses less digits than its factorization.

43001200043421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83873.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 43001200043421 its reverse (12434000210034), we get a palindrome (55435200253455).

The spelling of 43001200043421 in words is "forty-three trillion, one billion, two hundred million, forty-three thousand, four hundred twenty-one".