8520123 has 4 divisors (see below), whose sum is σ = 11360168. Its totient is φ = 5680080.

The previous prime is 8520107. The next prime is 8520139. The reversal of 8520123 is 3210258.

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 (8520107) and next prime (8520139).

It is not a de Polignac number, because 8520123 - 2⁴ = 8520107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8520123.

It is not an unprimeable number, because it can be changed into a prime (8520103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420018 + ... + 1420023.

It is an arithmetic number, because the mean of its divisors is an integer number (2840042).

Almost surely, 2^8520123 is an apocalyptic number.

8520123 is a deficient number, since it is larger than the sum of its proper divisors (2840045).

8520123 is a wasteful number, since it uses less digits than its factorization.

8520123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840044.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 8520123 is about 2918.9249733421. The cubic root of 8520123 is about 204.2436774779.

The spelling of 8520123 in words is "eight million, five hundred twenty thousand, one hundred twenty-three".