12540956 has 12 divisors (see below), whose sum is σ = 22044120. Its totient is φ = 6242640.

The previous prime is 12540953. The next prime is 12540961. The reversal of 12540956 is 65904521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5930 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (1837010).

Almost surely, 2^12540956 is an apocalyptic number.

It is an amenable number.

12540956 is a deficient number, since it is larger than the sum of its proper divisors (9503164).

12540956 is a wasteful number, since it uses less digits than its factorization.

12540956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13924 (or 13922 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 12540956 is about 3541.3212223688. The cubic root of 12540956 is about 232.3326332390.

The spelling of 12540956 in words is "twelve million, five hundred forty thousand, nine hundred fifty-six".