1421352481 has 2 divisors, whose sum is σ = 1421352482. Its totient is φ = 1421352480.

The previous prime is 1421352461. The next prime is 1421352503. The reversal of 1421352481 is 1842531241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097928225 + 323424256 = 33135^2 + 17984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421352481 - 2⁷ = 1421352353 is a prime.

It is a super-2 number, since 2×1421352481² = 4040485750489710722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421352451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710676240 + 710676241.

It is an arithmetic number, because the mean of its divisors is an integer number (710676241).

Almost surely, 2^1421352481 is an apocalyptic number.

It is an amenable number.

1421352481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421352481 is an equidigital number, since it uses as much as digits as its factorization.

1421352481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 1421352481 is about 37700.8286513705. The cubic root of 1421352481 is about 1124.3476002744.

The spelling of 1421352481 in words is "one billion, four hundred twenty-one million, three hundred fifty-two thousand, four hundred eighty-one".