4431302142021 has 12 divisors (see below), whose sum is σ = 6400788835948. Its totient is φ = 2954192624064.

The previous prime is 4431302142019. The next prime is 4431302142073. The reversal of 4431302142021 is 1202412031344.

4431302142021 is a `hidden beast` number, since 4 + 431 + 3 + 0 + 21 + 4 + 202 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1054289489796 + 3377012652225 = 1026786^2 + 1837665^2 .

It is not a de Polignac number, because 4431302142021 - 2¹ = 4431302142019 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 (4431302142721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4200951 + ... + 5148843.

Almost surely, 2^{4431302142021} is an apocalyptic number.

It is an amenable number.

4431302142021 is a deficient number, since it is larger than the sum of its proper divisors (1969486693927).

4431302142021 is a wasteful number, since it uses less digits than its factorization.

4431302142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467332 (or 1467329 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 4431302142021 its reverse (1202412031344), we get a palindrome (5633714173365).

The spelling of 4431302142021 in words is "four trillion, four hundred thirty-one billion, three hundred two million, one hundred forty-two thousand, twenty-one".