1421534563 has 2 divisors, whose sum is σ = 1421534564. Its totient is φ = 1421534562.

The previous prime is 1421534531. The next prime is 1421534581. The reversal of 1421534563 is 3654351241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1421534563 - 2⁵ = 1421534531 is a prime.

It is not a weakly prime, because it can be changed into another prime (1421534593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710767281 + 710767282.

It is an arithmetic number, because the mean of its divisors is an integer number (710767282).

Almost surely, 2^1421534563 is an apocalyptic number.

1421534563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421534563 is an equidigital number, since it uses as much as digits as its factorization.

1421534563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 1421534563 is about 37703.2434015961. The cubic root of 1421534563 is about 1124.3956096460.

The spelling of 1421534563 in words is "one billion, four hundred twenty-one million, five hundred thirty-four thousand, five hundred sixty-three".