420513603 has 16 divisors (see below), whose sum is σ = 570124800. Its totient is φ = 275652000.

The previous prime is 420513571. The next prime is 420513619. The reversal of 420513603 is 306315024.

It is a happy number.

It is not a de Polignac number, because 420513603 - 2⁵ = 420513571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420513673) 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 in 15 ways as a sum of consecutive naturals, for example, 55953 + ... + 63021.

It is an arithmetic number, because the mean of its divisors is an integer number (35632800).

Almost surely, 2^420513603 is an apocalyptic number.

420513603 is a deficient number, since it is larger than the sum of its proper divisors (149611197).

420513603 is a wasteful number, since it uses less digits than its factorization.

420513603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7402.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 420513603 is about 20506.4283335738. The cubic root of 420513603 is about 749.1923768609.

Adding to 420513603 its reverse (306315024), we get a palindrome (726828627).

It can be divided in two parts, 42051 and 3603, that added together give a palindrome (45654).

The spelling of 420513603 in words is "four hundred twenty million, five hundred thirteen thousand, six hundred three".