12642969 has 4 divisors (see below), whose sum is σ = 16857296. Its totient is φ = 8428644.

The previous prime is 12642919. The next prime is 12642979. The reversal of 12642969 is 96924621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96924621 = 3 ⋅32308207.

It is not a de Polignac number, because 12642969 - 2⁷ = 12642841 is a prime.

It is a super-2 number, since 2×12642969² = 319689330269922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12642919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2107159 + ... + 2107164.

It is an arithmetic number, because the mean of its divisors is an integer number (4214324).

Almost surely, 2^12642969 is an apocalyptic number.

It is an amenable number.

12642969 is a deficient number, since it is larger than the sum of its proper divisors (4214327).

12642969 is an equidigital number, since it uses as much as digits as its factorization.

12642969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214326.

The product of its digits is 46656, while the sum is 39.

The square root of 12642969 is about 3555.6952906569. The cubic root of 12642969 is about 232.9608940491.

The spelling of 12642969 in words is "twelve million, six hundred forty-two thousand, nine hundred sixty-nine".