1428730014421 has 2 divisors, whose sum is σ = 1428730014422. Its totient is φ = 1428730014420.

The previous prime is 1428730014419. The next prime is 1428730014433. The reversal of 1428730014421 is 1244100378241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1340616622500 + 88113391921 = 1157850^2 + 296839^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428730014421 - 2¹ = 1428730014419 is a prime.

Together with 1428730014419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428730014121) 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, 714365007210 + 714365007211.

It is an arithmetic number, because the mean of its divisors is an integer number (714365007211).

Almost surely, 2^{1428730014421} is an apocalyptic number.

It is an amenable number.

1428730014421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428730014421 is an equidigital number, since it uses as much as digits as its factorization.

1428730014421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 1428730014421 in words is "one trillion, four hundred twenty-eight billion, seven hundred thirty million, fourteen thousand, four hundred twenty-one".