12403123140 has 48 divisors (see below), whose sum is σ = 34941832128. Its totient is φ = 3287205504.

The previous prime is 12403123133. The next prime is 12403123151. The reversal of 12403123140 is 4132130421.

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, 624327 + ... + 643886.

It is an arithmetic number, because the mean of its divisors is an integer number (727954836).

Almost surely, 2^12403123140 is an apocalyptic number.

12403123140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12403123140 is an abundant number, since it is smaller than the sum of its proper divisors (22538708988).

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

12403123140 is a wasteful number, since it uses less digits than its factorization.

12403123140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268388 (or 1268386 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12403123140 its reverse (4132130421), we get a palindrome (16535253561).

The spelling of 12403123140 in words is "twelve billion, four hundred three million, one hundred twenty-three thousand, one hundred forty".