12123003140 has 12 divisors (see below), whose sum is σ = 25458306636. Its totient is φ = 4849201248.

The previous prime is 12123003083. The next prime is 12123003163. The reversal of 12123003140 is 4130032121.

It can be written as a sum of positive squares in 2 ways, for example, as 4110604996 + 8012398144 = 64114^2 + 89512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303075059 + ... + 303075098.

It is an arithmetic number, because the mean of its divisors is an integer number (2121525553).

Almost surely, 2^12123003140 is an apocalyptic number.

12123003140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123003140 is an abundant number, since it is smaller than the sum of its proper divisors (13335303496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123003140 is a wasteful number, since it uses less digits than its factorization.

12123003140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606150166 (or 606150164 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12123003140 its reverse (4130032121), we get a palindrome (16253035261).

The spelling of 12123003140 in words is "twelve billion, one hundred twenty-three million, three thousand, one hundred forty".