421065763 has 2 divisors, whose sum is σ = 421065764. Its totient is φ = 421065762.

The previous prime is 421065727. The next prime is 421065767. The reversal of 421065763 is 367560124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421065763 - 2²⁵ = 387511331 is a prime.

It is not a weakly prime, because it can be changed into another prime (421065767) 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, 210532881 + 210532882.

It is an arithmetic number, because the mean of its divisors is an integer number (210532882).

Almost surely, 2^421065763 is an apocalyptic number.

421065763 is a deficient number, since it is larger than the sum of its proper divisors (1).

421065763 is an equidigital number, since it uses as much as digits as its factorization.

421065763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 421065763 is about 20519.8870123595. The cubic root of 421065763 is about 749.5201451995.

The spelling of 421065763 in words is "four hundred twenty-one million, sixty-five thousand, seven hundred sixty-three".