43044421423 has 4 divisors (see below), whose sum is σ = 43282236088. Its totient is φ = 42806606760.

The previous prime is 43044421393. The next prime is 43044421439. The reversal of 43044421423 is 32412444034.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43044421423 - 2²¹ = 43042324271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43044427423) 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, 118907061 + ... + 118907422.

It is an arithmetic number, because the mean of its divisors is an integer number (10820559022).

Almost surely, 2^43044421423 is an apocalyptic number.

43044421423 is a deficient number, since it is larger than the sum of its proper divisors (237814665).

43044421423 is a wasteful number, since it uses less digits than its factorization.

43044421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237814664.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 43044421423 its reverse (32412444034), we get a palindrome (75456865457).

The spelling of 43044421423 in words is "forty-three billion, forty-four million, four hundred twenty-one thousand, four hundred twenty-three".