43021264423 has 2 divisors, whose sum is σ = 43021264424. Its totient is φ = 43021264422.

The previous prime is 43021264399. The next prime is 43021264471. The reversal of 43021264423 is 32446212034.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43021264423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43021264483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21510632211 + 21510632212.

It is an arithmetic number, because the mean of its divisors is an integer number (21510632212).

Almost surely, 2^43021264423 is an apocalyptic number.

43021264423 is a deficient number, since it is larger than the sum of its proper divisors (1).

43021264423 is an equidigital number, since it uses as much as digits as its factorization.

43021264423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 43021264423 its reverse (32446212034), we get a palindrome (75467476457).

The spelling of 43021264423 in words is "forty-three billion, twenty-one million, two hundred sixty-four thousand, four hundred twenty-three".