12642184 has 8 divisors (see below), whose sum is σ = 23704110. Its totient is φ = 6321088.

The previous prime is 12642181. The next prime is 12642191. The reversal of 12642184 is 48124621.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 5189284 = 2730^2 + 2278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12642181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 790129 + ... + 790144.

Almost surely, 2^12642184 is an apocalyptic number.

It is an amenable number.

12642184 is a deficient number, since it is larger than the sum of its proper divisors (11061926).

12642184 is a wasteful number, since it uses less digits than its factorization.

12642184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580279 (or 1580275 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 12642184 is about 3555.5849026567. The cubic root of 12642184 is about 232.9560724473.

The spelling of 12642184 in words is "twelve million, six hundred forty-two thousand, one hundred eighty-four".