12540947 has 8 divisors (see below), whose sum is σ = 12710880. Its totient is φ = 12372480.

The previous prime is 12540937. The next prime is 12540953. The reversal of 12540947 is 74904521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12540947 - 2⁸ = 12540691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12540937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34754 + ... + 35112.

It is an arithmetic number, because the mean of its divisors is an integer number (1588860).

Almost surely, 2^12540947 is an apocalyptic number.

12540947 is a deficient number, since it is larger than the sum of its proper divisors (169933).

12540947 is a wasteful number, since it uses less digits than its factorization.

12540947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12540947 is about 3541.3199516564. The cubic root of 12540947 is about 232.3325776612.

The spelling of 12540947 in words is "twelve million, five hundred forty thousand, nine hundred forty-seven".