421603315 has 24 divisors (see below), whose sum is σ = 614225952. Its totient is φ = 272087040.

The previous prime is 421603313. The next prime is 421603319. The reversal of 421603315 is 513306124.

It is not a de Polignac number, because 421603315 - 2¹ = 421603313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421603315.

It is not an unprimeable number, because it can be changed into a prime (421603313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10726 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (25592748).

Almost surely, 2^421603315 is an apocalyptic number.

421603315 is a deficient number, since it is larger than the sum of its proper divisors (192622637).

421603315 is a wasteful number, since it uses less digits than its factorization.

421603315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41727 (or 41710 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 421603315 is about 20532.9811522828. The cubic root of 421603315 is about 749.8389669084.

Adding to 421603315 its reverse (513306124), we get a palindrome (934909439).

The spelling of 421603315 in words is "four hundred twenty-one million, six hundred three thousand, three hundred fifteen".