4021430342431 has 16 divisors (see below), whose sum is σ = 4418466589440. Its totient is φ = 3643032412800.

The previous prime is 4021430342407. The next prime is 4021430342513. The reversal of 4021430342431 is 1342430341204.

It is not a de Polignac number, because 4021430342431 - 2⁹ = 4021430341919 is a prime.

It is a super-2 number, since 2×4021430342431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021430342393 and 4021430342402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021430342131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58956 + ... + 2836606.

It is an arithmetic number, because the mean of its divisors is an integer number (276154161840).

Almost surely, 2^{4021430342431} is an apocalyptic number.

4021430342431 is a deficient number, since it is larger than the sum of its proper divisors (397036247009).

4021430342431 is a wasteful number, since it uses less digits than its factorization.

4021430342431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781006.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 4021430342431 its reverse (1342430341204), we get a palindrome (5363860683635).

The spelling of 4021430342431 in words is "four trillion, twenty-one billion, four hundred thirty million, three hundred forty-two thousand, four hundred thirty-one".