12940541 has 2 divisors, whose sum is σ = 12940542. Its totient is φ = 12940540.

The previous prime is 12940537. The next prime is 12940579. The reversal of 12940541 is 14504921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 52441 = 3590^2 + 229^2 .

It is an emirp because it is prime and its reverse (14504921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12940541 - 2² = 12940537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12940541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12940591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470270 + 6470271.

It is an arithmetic number, because the mean of its divisors is an integer number (6470271).

Almost surely, 2^12940541 is an apocalyptic number.

It is an amenable number.

12940541 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940541 is an equidigital number, since it uses as much as digits as its factorization.

12940541 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12940541 is about 3597.2963458687. The cubic root of 12940541 is about 234.7744387661.

The spelling of 12940541 in words is "twelve million, nine hundred forty thousand, five hundred forty-one".