8120146 has 4 divisors (see below), whose sum is σ = 12180222. Its totient is φ = 4060072.

The previous prime is 8120129. The next prime is 8120153. The reversal of 8120146 is 6410218.

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

It can be written as a sum of positive squares in only one way, i.e., 7623121 + 497025 = 2761^2 + 705^2 .

It is a super-2 number, since 2×8120146² = 131873542122632, which contains 22 as substring.

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 an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030035 + ... + 2030038.

Almost surely, 2^8120146 is an apocalyptic number.

8120146 is a deficient number, since it is larger than the sum of its proper divisors (4060076).

8120146 is a wasteful number, since it uses less digits than its factorization.

8120146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4060075.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 8120146 is about 2849.5869876177. The cubic root of 8120146 is about 200.9962458974.

The spelling of 8120146 in words is "eight million, one hundred twenty thousand, one hundred forty-six".