12240947 has 2 divisors, whose sum is σ = 12240948. Its totient is φ = 12240946.

The previous prime is 12240937. The next prime is 12240953. The reversal of 12240947 is 74904221.

12240947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12240947 - 2²⁰ = 11192371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12240937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120473 + 6120474.

It is an arithmetic number, because the mean of its divisors is an integer number (6120474).

Almost surely, 2^12240947 is an apocalyptic number.

12240947 is a deficient number, since it is larger than the sum of its proper divisors (1).

12240947 is an equidigital number, since it uses as much as digits as its factorization.

12240947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12240947 is about 3498.7064752562. The cubic root of 12240947 is about 230.4650138331.

It can be divided in two parts, 1224094 and 7, that multiplied together give a palindrome (8568658).

The spelling of 12240947 in words is "twelve million, two hundred forty thousand, nine hundred forty-seven".