123120523 has 2 divisors, whose sum is σ = 123120524. Its totient is φ = 123120522.

The previous prime is 123120521. The next prime is 123120533. The reversal of 123120523 is 325021321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123120523 - 2¹ = 123120521 is a prime.

Together with 123120521, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 123120523.

It is not a weakly prime, because it can be changed into another prime (123120521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61560261 + 61560262.

It is an arithmetic number, because the mean of its divisors is an integer number (61560262).

Almost surely, 2^123120523 is an apocalyptic number.

123120523 is a deficient number, since it is larger than the sum of its proper divisors (1).

123120523 is an equidigital number, since it uses as much as digits as its factorization.

123120523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 123120523 is about 11095.9687724867. The cubic root of 123120523 is about 497.4813649241.

Adding to 123120523 its reverse (325021321), we get a palindrome (448141844).

The spelling of 123120523 in words is "one hundred twenty-three million, one hundred twenty thousand, five hundred twenty-three".