420562603 has 2 divisors, whose sum is σ = 420562604. Its totient is φ = 420562602.

The previous prime is 420562559. The next prime is 420562619. The reversal of 420562603 is 306265024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420562603 is a prime.

It is not a weakly prime, because it can be changed into another prime (420562693) 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, 210281301 + 210281302.

It is an arithmetic number, because the mean of its divisors is an integer number (210281302).

Almost surely, 2^420562603 is an apocalyptic number.

420562603 is a deficient number, since it is larger than the sum of its proper divisors (1).

420562603 is an equidigital number, since it uses as much as digits as its factorization.

420562603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 420562603 is about 20507.6230460773. The cubic root of 420562603 is about 749.2214754048.

The spelling of 420562603 in words is "four hundred twenty million, five hundred sixty-two thousand, six hundred three".