8421907245 has 8 divisors (see below), whose sum is σ = 13475051616. Its totient is φ = 4491683856.

The previous prime is 8421907223. The next prime is 8421907297. The reversal of 8421907245 is 5427091248.

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

It is not a de Polignac number, because 8421907245 - 2¹¹ = 8421905197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8421907197 and 8421907206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280730227 + ... + 280730256.

It is an arithmetic number, because the mean of its divisors is an integer number (1684381452).

Almost surely, 2^8421907245 is an apocalyptic number.

It is an amenable number.

8421907245 is a deficient number, since it is larger than the sum of its proper divisors (5053144371).

8421907245 is a wasteful number, since it uses less digits than its factorization.

8421907245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561460491.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 8421907245 is about 91770.9498970126. The cubic root of 8421907245 is about 2034.5583576775.

The spelling of 8421907245 in words is "eight billion, four hundred twenty-one million, nine hundred seven thousand, two hundred forty-five".