520247123 has 6 divisors (see below), whose sum is σ = 571842012. Its totient is φ = 472951820.

The previous prime is 520247111. The next prime is 520247131. The reversal of 520247123 is 321742025.

It is a de Polignac number, because none of the positive numbers 2^k-520247123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520247092 and 520247101.

It is not an unprimeable number, because it can be changed into a prime (520247173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2149661 + ... + 2149902.

It is an arithmetic number, because the mean of its divisors is an integer number (95307002).

Almost surely, 2^520247123 is an apocalyptic number.

520247123 is a deficient number, since it is larger than the sum of its proper divisors (51594889).

520247123 is a wasteful number, since it uses less digits than its factorization.

520247123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299585 (or 4299574 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 520247123 is about 22808.9263885874. The cubic root of 520247123 is about 804.2725179297.

Adding to 520247123 its reverse (321742025), we get a palindrome (841989148).

It can be divided in two parts, 5202 and 47123, that added together give a palindrome (52325).

The spelling of 520247123 in words is "five hundred twenty million, two hundred forty-seven thousand, one hundred twenty-three".