12842637 has 4 divisors (see below), whose sum is σ = 17123520. Its totient is φ = 8561756.

The previous prime is 12842629. The next prime is 12842647. The reversal of 12842637 is 73624821.

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.

It is a cyclic number.

It is not a de Polignac number, because 12842637 - 2³ = 12842629 is a prime.

It is a super-2 number, since 2×12842637² = 329866650227538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12842598 and 12842607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12842647) 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, 2140437 + ... + 2140442.

It is an arithmetic number, because the mean of its divisors is an integer number (4280880).

Almost surely, 2^12842637 is an apocalyptic number.

It is an amenable number.

12842637 is a deficient number, since it is larger than the sum of its proper divisors (4280883).

12842637 is an equidigital number, since it uses as much as digits as its factorization.

12842637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280882.

The product of its digits is 16128, while the sum is 33.

The square root of 12842637 is about 3583.6625120120. The cubic root of 12842637 is about 234.1808631664.

The spelling of 12842637 in words is "twelve million, eight hundred forty-two thousand, six hundred thirty-seven".