12642829 has 4 divisors (see below), whose sum is σ = 12649984. Its totient is φ = 12635676.

The previous prime is 12642827. The next prime is 12642841. The reversal of 12642829 is 92824621.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12642829 - 2¹ = 12642827 is a prime.

It is a super-2 number, since 2×12642829² = 319682250246482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12642794 and 12642803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642827) 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, 1204 + ... + 5170.

It is an arithmetic number, because the mean of its divisors is an integer number (3162496).

Almost surely, 2^12642829 is an apocalyptic number.

It is an amenable number.

12642829 is a deficient number, since it is larger than the sum of its proper divisors (7155).

12642829 is an equidigital number, since it uses as much as digits as its factorization.

12642829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154.

The product of its digits is 13824, while the sum is 34.

The square root of 12642829 is about 3555.6756038761. The cubic root of 12642829 is about 232.9600341602.

The spelling of 12642829 in words is "twelve million, six hundred forty-two thousand, eight hundred twenty-nine".