123102563 has 4 divisors (see below), whose sum is σ = 123557088. Its totient is φ = 122648040.

The previous prime is 123102557. The next prime is 123102607. The reversal of 123102563 is 365201321.

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

It is a cyclic number.

It is not a de Polignac number, because 123102563 - 2¹² = 123098467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123102503) 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, 226856 + ... + 227397.

It is an arithmetic number, because the mean of its divisors is an integer number (30889272).

Almost surely, 2^123102563 is an apocalyptic number.

123102563 is a deficient number, since it is larger than the sum of its proper divisors (454525).

123102563 is an equidigital number, since it uses as much as digits as its factorization.

123102563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454524.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 123102563 is about 11095.1594400441. The cubic root of 123102563 is about 497.4571739942.

Adding to 123102563 its reverse (365201321), we get a palindrome (488303884).

The spelling of 123102563 in words is "one hundred twenty-three million, one hundred two thousand, five hundred sixty-three".