12042637 has 4 divisors (see below), whose sum is σ = 12676480. Its totient is φ = 11408796.

The previous prime is 12042619. The next prime is 12042659. The reversal of 12042637 is 73624021.

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 12042637 - 2¹⁵ = 12009869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316893 + ... + 316930.

It is an arithmetic number, because the mean of its divisors is an integer number (3169120).

Almost surely, 2^12042637 is an apocalyptic number.

It is an amenable number.

12042637 is a deficient number, since it is larger than the sum of its proper divisors (633843).

12042637 is an equidigital number, since it uses as much as digits as its factorization.

12042637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633842.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 12042637 is about 3470.2502791586. The cubic root of 12042637 is about 229.2136790088.

Adding to 12042637 its reverse (73624021), we get a palindrome (85666658).

The spelling of 12042637 in words is "twelve million, forty-two thousand, six hundred thirty-seven".