12945140 has 24 divisors (see below), whose sum is σ = 29276520. Its totient is φ = 4779648.

The previous prime is 12945133. The next prime is 12945151. The reversal of 12945140 is 4154921.

12945140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13924 + 12931216 = 118^2 + 3596^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24635 + ... + 25154.

It is an arithmetic number, because the mean of its divisors is an integer number (1219855).

Almost surely, 2^12945140 is an apocalyptic number.

12945140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12945140 is an abundant number, since it is smaller than the sum of its proper divisors (16331380).

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

12945140 is a wasteful number, since it uses less digits than its factorization.

12945140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49811 (or 49809 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 12945140 is about 3597.9355191554. The cubic root of 12945140 is about 234.8022480043.

The spelling of 12945140 in words is "twelve million, nine hundred forty-five thousand, one hundred forty".