8042245 has 4 divisors (see below), whose sum is σ = 9650700. Its totient is φ = 6433792.

The previous prime is 8042239. The next prime is 8042267. The reversal of 8042245 is 5422408.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6305121 + 1737124 = 2511^2 + 1318^2 .

It is a cyclic number.

It is not a de Polignac number, because 8042245 - 2⁵ = 8042213 is a prime.

8042245 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 804220 + ... + 804229.

It is an arithmetic number, because the mean of its divisors is an integer number (2412675).

Almost surely, 2^8042245 is an apocalyptic number.

It is an amenable number.

8042245 is a deficient number, since it is larger than the sum of its proper divisors (1608455).

8042245 is a wasteful number, since it uses less digits than its factorization.

8042245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608454.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8042245 is about 2835.8852233474. The cubic root of 8042245 is about 200.3514238115.

The spelling of 8042245 in words is "eight million, forty-two thousand, two hundred forty-five".