8120506 has 4 divisors (see below), whose sum is σ = 12180762. Its totient is φ = 4060252.

The previous prime is 8120491. The next prime is 8120527. The reversal of 8120506 is 6050218.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6050218 = 2 ⋅3025109.

It can be written as a sum of positive squares in only one way, i.e., 6890625 + 1229881 = 2625^2 + 1109^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a zygodrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030125 + ... + 2030128.

Almost surely, 2^8120506 is an apocalyptic number.

8120506 is a deficient number, since it is larger than the sum of its proper divisors (4060256).

8120506 is a wasteful number, since it uses less digits than its factorization.

8120506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060255.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 8120506 is about 2849.6501539663. The cubic root of 8120506 is about 200.9992161880. Note that the first 3 decimals are identical.

The spelling of 8120506 in words is "eight million, one hundred twenty thousand, five hundred six".