12942987 has 8 divisors (see below), whose sum is σ = 17416080. Its totient is φ = 8549280.

The previous prime is 12942983. The next prime is 12943031. The reversal of 12942987 is 78924921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12942987 - 2² = 12942983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12942983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19464 + ... + 20117.

It is an arithmetic number, because the mean of its divisors is an integer number (2177010).

Almost surely, 2^12942987 is an apocalyptic number.

12942987 is a deficient number, since it is larger than the sum of its proper divisors (4473093).

12942987 is a wasteful number, since it uses less digits than its factorization.

12942987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39693.

The product of its digits is 72576, while the sum is 42.

The square root of 12942987 is about 3597.6363073552. The cubic root of 12942987 is about 234.7892300617.

The spelling of 12942987 in words is "twelve million, nine hundred forty-two thousand, nine hundred eighty-seven".