123102130 has 32 divisors (see below), whose sum is σ = 225756720. Its totient is φ = 48322560.

The previous prime is 123102113. The next prime is 123102149. The reversal of 123102130 is 31201321.

It can be written as a sum of positive squares in 8 ways, for example, as 8462281 + 114639849 = 2909^2 + 10707^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123102130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139290 + ... + 140170.

Almost surely, 2^123102130 is an apocalyptic number.

123102130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123102130 is a deficient number, since it is larger than the sum of its proper divisors (102654590).

123102130 is a wasteful number, since it uses less digits than its factorization.

123102130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 123102130 is about 11095.1399270131. The cubic root of 123102130 is about 497.4565907429.

Adding to 123102130 its reverse (31201321), we get a palindrome (154303451).

The spelling of 123102130 in words is "one hundred twenty-three million, one hundred two thousand, one hundred thirty".