420487603 has 2 divisors, whose sum is σ = 420487604. Its totient is φ = 420487602.

The previous prime is 420487601. The next prime is 420487621. The reversal of 420487603 is 306784024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420487603 - 2¹ = 420487601 is a prime.

Together with 420487601, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420487601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210243801 + 210243802.

It is an arithmetic number, because the mean of its divisors is an integer number (210243802).

Almost surely, 2^420487603 is an apocalyptic number.

420487603 is a deficient number, since it is larger than the sum of its proper divisors (1).

420487603 is an equidigital number, since it uses as much as digits as its factorization.

420487603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 420487603 is about 20505.7943762245. The cubic root of 420487603 is about 749.1769358992.

The spelling of 420487603 in words is "four hundred twenty million, four hundred eighty-seven thousand, six hundred three".