8122145 has 4 divisors (see below), whose sum is σ = 9746580. Its totient is φ = 6497712.

The previous prime is 8122133. The next prime is 8122157. The reversal of 8122145 is 5412218.

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

It is an interprime number because it is at equal distance from previous prime (8122133) and next prime (8122157).

It can be written as a sum of positive squares in 2 ways, for example, as 3845521 + 4276624 = 1961^2 + 2068^2 .

It is a cyclic number.

It is not a de Polignac number, because 8122145 - 2⁸ = 8121889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8122145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 812210 + ... + 812219.

It is an arithmetic number, because the mean of its divisors is an integer number (2436645).

Almost surely, 2^8122145 is an apocalyptic number.

It is an amenable number.

8122145 is a deficient number, since it is larger than the sum of its proper divisors (1624435).

8122145 is a wasteful number, since it uses less digits than its factorization.

8122145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624434.

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

The square root of 8122145 is about 2849.9377186177. The cubic root of 8122145 is about 201.0127381513.

The spelling of 8122145 in words is "eight million, one hundred twenty-two thousand, one hundred forty-five".