4321124435421 has 6 divisors (see below), whose sum is σ = 6241624184510. Its totient is φ = 2880749623608.

The previous prime is 4321124435387. The next prime is 4321124435431. The reversal of 4321124435421 is 1245344211234.

4321124435421 is a `hidden beast` number, since 4 + 3 + 211 + 2 + 4 + 435 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3977272376100 + 343852059321 = 1994310^2 + 586389^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4321124435421 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 (4321124435431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240062468626 + ... + 240062468643.

Almost surely, 2^{4321124435421} is an apocalyptic number.

It is an amenable number.

4321124435421 is a deficient number, since it is larger than the sum of its proper divisors (1920499749089).

4321124435421 is a wasteful number, since it uses less digits than its factorization.

4321124435421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480124937275 (or 480124937272 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 4321124435421 its reverse (1245344211234), we get a palindrome (5566468646655).

The spelling of 4321124435421 in words is "four trillion, three hundred twenty-one billion, one hundred twenty-four million, four hundred thirty-five thousand, four hundred twenty-one".