12940742 has 4 divisors (see below), whose sum is σ = 19411116. Its totient is φ = 6470370.

The previous prime is 12940727. The next prime is 12940747. The reversal of 12940742 is 24704921.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12940747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235184 + ... + 3235187.

It is an arithmetic number, because the mean of its divisors is an integer number (4852779).

Almost surely, 2^12940742 is an apocalyptic number.

12940742 is a deficient number, since it is larger than the sum of its proper divisors (6470374).

12940742 is an equidigital number, since it uses as much as digits as its factorization.

12940742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470373.

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

The square root of 12940742 is about 3597.3242834084. The cubic root of 12940742 is about 234.7756543108.

The spelling of 12940742 in words is "twelve million, nine hundred forty thousand, seven hundred forty-two".