421320315 has 16 divisors (see below), whose sum is σ = 725967648. Its totient is φ = 207419136.

The previous prime is 421320313. The next prime is 421320329. The reversal of 421320315 is 513023124.

It is not a de Polignac number, because 421320315 - 2¹ = 421320313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421320291 and 421320300.

It is not an unprimeable number, because it can be changed into a prime (421320313) 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 15 ways as a sum of consecutive naturals, for example, 1080114 + ... + 1080503.

It is an arithmetic number, because the mean of its divisors is an integer number (45372978).

Almost surely, 2^421320315 is an apocalyptic number.

421320315 is a deficient number, since it is larger than the sum of its proper divisors (304647333).

421320315 is a wasteful number, since it uses less digits than its factorization.

421320315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160638.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 421320315 is about 20526.0886434800. The cubic root of 421320315 is about 749.6711536123.

Adding to 421320315 its reverse (513023124), we get a palindrome (934343439).

The spelling of 421320315 in words is "four hundred twenty-one million, three hundred twenty thousand, three hundred fifteen".