43023123134421 has 4 divisors (see below), whose sum is σ = 57364164179232. Its totient is φ = 28682082089612.

The previous prime is 43023123134419. The next prime is 43023123134471. The reversal of 43023123134421 is 12443132132034.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43023123134421 - 2¹ = 43023123134419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43023123134471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7170520522401 + ... + 7170520522406.

It is an arithmetic number, because the mean of its divisors is an integer number (14341041044808).

Almost surely, 2^{43023123134421} is an apocalyptic number.

It is an amenable number.

43023123134421 is a deficient number, since it is larger than the sum of its proper divisors (14341041044811).

43023123134421 is a wasteful number, since it uses less digits than its factorization.

43023123134421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14341041044810.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 43023123134421 its reverse (12443132132034), we get a palindrome (55466255266455).

The spelling of 43023123134421 in words is "forty-three trillion, twenty-three billion, one hundred twenty-three million, one hundred thirty-four thousand, four hundred twenty-one".