8121245 has 16 divisors (see below), whose sum is σ = 10713600. Its totient is φ = 5860800.

The previous prime is 8121209. The next prime is 8121283. The reversal of 8121245 is 5421218.

It is not a de Polignac number, because 8121245 - 2¹² = 8117149 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 8121245.

It is a congruent number.

It is an unprimeable number.

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, 7700 + ... + 8690.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^8121245 is an apocalyptic number.

It is an amenable number.

8121245 is a deficient number, since it is larger than the sum of its proper divisors (2592355).

8121245 is a wasteful number, since it uses less digits than its factorization.

8121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its digits is 640, while the sum is 23.

The square root of 8121245 is about 2849.7798160560. The cubic root of 8121245 is about 201.0053132594.

The spelling of 8121245 in words is "eight million, one hundred twenty-one thousand, two hundred forty-five".