4043124231421 has 24 divisors (see below), whose sum is σ = 4496258221056. Its totient is φ = 3605586167040.

The previous prime is 4043124231409. The next prime is 4043124231427. The reversal of 4043124231421 is 1241324213404.

It is a happy number.

It is not a de Polignac number, because 4043124231421 - 2¹¹ = 4043124229373 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 (4043124231427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339666756 + ... + 339678658.

It is an arithmetic number, because the mean of its divisors is an integer number (187344092544).

Almost surely, 2^{4043124231421} is an apocalyptic number.

It is an amenable number.

4043124231421 is a deficient number, since it is larger than the sum of its proper divisors (453133989635).

4043124231421 is a wasteful number, since it uses less digits than its factorization.

4043124231421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23013 (or 22960 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4043124231421 its reverse (1241324213404), we get a palindrome (5284448444825).

The spelling of 4043124231421 in words is "four trillion, forty-three billion, one hundred twenty-four million, two hundred thirty-one thousand, four hundred twenty-one".