43034442321421 has 32 divisors (see below), whose sum is σ = 47850162497280. Its totient is φ = 38495101353984.

The previous prime is 43034442321371. The next prime is 43034442321439. The reversal of 43034442321421 is 12412324443034.

It is a cyclic number.

It is not a de Polignac number, because 43034442321421 - 2⁷ = 43034442321293 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 (43034442321461) 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, 273272121 + ... + 273429553.

It is an arithmetic number, because the mean of its divisors is an integer number (1495317578040).

Almost surely, 2^{43034442321421} is an apocalyptic number.

It is an amenable number.

43034442321421 is a deficient number, since it is larger than the sum of its proper divisors (4815720175859).

43034442321421 is a wasteful number, since it uses less digits than its factorization.

43034442321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161925.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 43034442321421 its reverse (12412324443034), we get a palindrome (55446766764455).

The spelling of 43034442321421 in words is "forty-three trillion, thirty-four billion, four hundred forty-two million, three hundred twenty-one thousand, four hundred twenty-one".