12040281 has 48 divisors (see below), whose sum is σ = 20629440. Its totient is φ = 6687360.

The previous prime is 12040277. The next prime is 12040289. The reversal of 12040281 is 18204021.

It is not a de Polignac number, because 12040281 - 2² = 12040277 is a prime.

It is a super-2 number, since 2×12040281² = 289936733117922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12040289) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69511 + ... + 69683.

It is an arithmetic number, because the mean of its divisors is an integer number (429780).

Almost surely, 2^12040281 is an apocalyptic number.

12040281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12040281 is a deficient number, since it is larger than the sum of its proper divisors (8589159).

12040281 is a wasteful number, since it uses less digits than its factorization.

12040281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 243 counting only the distinct ones).

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

The square root of 12040281 is about 3469.9108057701. The cubic root of 12040281 is about 229.1987303823.

It can be divided in two parts, 12040 and 281, that added together give a palindrome (12321).

The spelling of 12040281 in words is "twelve million, forty thousand, two hundred eighty-one".