12942939 has 4 divisors (see below), whose sum is σ = 17257256. Its totient is φ = 8628624.

The previous prime is 12942929. The next prime is 12942949. The reversal of 12942939 is 93924921.

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

It is an interprime number because it is at equal distance from previous prime (12942929) and next prime (12942949).

It is not a de Polignac number, because 12942939 - 2⁹ = 12942427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12942897 and 12942906.

It is not an unprimeable number, because it can be changed into a prime (12942929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157154 + ... + 2157159.

It is an arithmetic number, because the mean of its divisors is an integer number (4314314).

Almost surely, 2^12942939 is an apocalyptic number.

12942939 is a deficient number, since it is larger than the sum of its proper divisors (4314317).

12942939 is an equidigital number, since it uses as much as digits as its factorization.

12942939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314316.

The product of its digits is 34992, while the sum is 39.

The square root of 12942939 is about 3597.6296363022. The cubic root of 12942939 is about 234.7889398170.

The spelling of 12942939 in words is "twelve million, nine hundred forty-two thousand, nine hundred thirty-nine".