4021424004431 has 2 divisors, whose sum is σ = 4021424004432. Its totient is φ = 4021424004430.

The previous prime is 4021424004391. The next prime is 4021424004439. The reversal of 4021424004431 is 1344004241204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021424004431 is a prime.

It is a super-2 number, since 2×4021424004431² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4021424004394 and 4021424004403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021424004439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010712002215 + 2010712002216.

It is an arithmetic number, because the mean of its divisors is an integer number (2010712002216).

Almost surely, 2^{4021424004431} is an apocalyptic number.

4021424004431 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021424004431 is an equidigital number, since it uses as much as digits as its factorization.

4021424004431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 4021424004431 its reverse (1344004241204), we get a palindrome (5365428245635).

The spelling of 4021424004431 in words is "four trillion, twenty-one billion, four hundred twenty-four million, four thousand, four hundred thirty-one".