8242505 has 8 divisors (see below), whose sum is σ = 9906624. Its totient is φ = 6583600.

The previous prime is 8242469. The next prime is 8242519. The reversal of 8242505 is 5052428.

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

It is a de Polignac number, because none of the positive numbers 2^k-8242505 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4700 + ... + 6210.

It is an arithmetic number, because the mean of its divisors is an integer number (1238328).

Almost surely, 2^8242505 is an apocalyptic number.

It is an amenable number.

8242505 is a deficient number, since it is larger than the sum of its proper divisors (1664119).

8242505 is a wasteful number, since it uses less digits than its factorization.

8242505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 8242505 is about 2870.9763147752. The cubic root of 8242505 is about 202.0007924029. Note that the first 3 decimals are identical.

The spelling of 8242505 in words is "eight million, two hundred forty-two thousand, five hundred five".