12004281 has 10 divisors (see below), whose sum is σ = 17932442. Its totient is φ = 8002800.

The previous prime is 12004271. The next prime is 12004283. The reversal of 12004281 is 18240021.

12004281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 4665600 = 2709^2 + 2160^2 .

It is not a de Polignac number, because 12004281 - 2⁶ = 12004217 is a prime.

It is a super-2 number, since 2×12004281² = 288205524653922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12004283) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74020 + ... + 74181.

Almost surely, 2^12004281 is an apocalyptic number.

It is an amenable number.

12004281 is a deficient number, since it is larger than the sum of its proper divisors (5928161).

12004281 is an equidigital number, since it uses as much as digits as its factorization.

12004281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148213 (or 148204 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12004281 is about 3464.7194691634. The cubic root of 12004281 is about 228.9700703942.

The spelling of 12004281 in words is "twelve million, four thousand, two hundred eighty-one".