1421431004321 has 2 divisors, whose sum is σ = 1421431004322. Its totient is φ = 1421431004320.

The previous prime is 1421431004311. The next prime is 1421431004363. The reversal of 1421431004321 is 1234001341241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758893611025 + 662537393296 = 871145^2 + 813964^2 .

It is an emirp because it is prime and its reverse (1234001341241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421431004321 - 2¹⁸ = 1421430742177 is a prime.

It is a super-2 number, since 2×1421431004321² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421431004311) 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, 710715502160 + 710715502161.

It is an arithmetic number, because the mean of its divisors is an integer number (710715502161).

Almost surely, 2^{1421431004321} is an apocalyptic number.

It is an amenable number.

1421431004321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421431004321 is an equidigital number, since it uses as much as digits as its factorization.

1421431004321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1421431004321 its reverse (1234001341241), we get a palindrome (2655432345562).

The spelling of 1421431004321 in words is "one trillion, four hundred twenty-one billion, four hundred thirty-one million, four thousand, three hundred twenty-one".