421515315 has 48 divisors (see below), whose sum is σ = 788703552. Its totient is φ = 207021312.

The previous prime is 421515299. The next prime is 421515329. The reversal of 421515315 is 513515124.

It is not a de Polignac number, because 421515315 - 2⁴ = 421515299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 428314 + ... + 429296.

It is an arithmetic number, because the mean of its divisors is an integer number (16431324).

Almost surely, 2^421515315 is an apocalyptic number.

421515315 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421515315 is a deficient number, since it is larger than the sum of its proper divisors (367188237).

421515315 is a wasteful number, since it uses less digits than its factorization.

421515315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740 (or 1737 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 421515315 is about 20530.8381465541. The cubic root of 421515315 is about 749.7867927293.

The spelling of 421515315 in words is "four hundred twenty-one million, five hundred fifteen thousand, three hundred fifteen".