12945123 has 16 divisors (see below), whose sum is σ = 19261440. Its totient is φ = 8592552.

The previous prime is 12945103. The next prime is 12945133. The reversal of 12945123 is 32154921.

12945123 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12945123 - 2⁹ = 12944611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12945103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6190 + ... + 8012.

It is an arithmetic number, because the mean of its divisors is an integer number (1203840).

Almost surely, 2^12945123 is an apocalyptic number.

12945123 is a deficient number, since it is larger than the sum of its proper divisors (6316317).

12945123 is a wasteful number, since it uses less digits than its factorization.

12945123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2089 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12945123 is about 3597.9331566887. The cubic root of 12945123 is about 234.8021452208.

The spelling of 12945123 in words is "twelve million, nine hundred forty-five thousand, one hundred twenty-three".