12940507 has 2 divisors, whose sum is σ = 12940508. Its totient is φ = 12940506.

The previous prime is 12940493. The next prime is 12940523. The reversal of 12940507 is 70504921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12940507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12940537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470253 + 6470254.

It is an arithmetic number, because the mean of its divisors is an integer number (6470254).

Almost surely, 2^12940507 is an apocalyptic number.

12940507 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940507 is an equidigital number, since it uses as much as digits as its factorization.

12940507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12940507 is about 3597.2916200942. The cubic root of 12940507 is about 234.7742331504.

The spelling of 12940507 in words is "twelve million, nine hundred forty thousand, five hundred seven".