420343603 has 8 divisors (see below), whose sum is σ = 445445280. Its totient is φ = 395949120.

The previous prime is 420343591. The next prime is 420343613. The reversal of 420343603 is 306343024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420343603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420343613) 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 in 7 ways as a sum of consecutive naturals, for example, 175575 + ... + 177952.

It is an arithmetic number, because the mean of its divisors is an integer number (55680660).

Almost surely, 2^420343603 is an apocalyptic number.

420343603 is a deficient number, since it is larger than the sum of its proper divisors (25101677).

420343603 is a wasteful number, since it uses less digits than its factorization.

420343603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353597.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 420343603 is about 20502.2828728900. The cubic root of 420343603 is about 749.0914052000.

Adding to 420343603 its reverse (306343024), we get a palindrome (726686627).

The spelling of 420343603 in words is "four hundred twenty million, three hundred forty-three thousand, six hundred three".