12075281 has 4 divisors (see below), whose sum is σ = 12491700. Its totient is φ = 11658864.

The previous prime is 12075277. The next prime is 12075289. The reversal of 12075281 is 18257021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18257021 = 37 ⋅493433.

It can be written as a sum of positive squares in 2 ways, for example, as 9486400 + 2588881 = 3080^2 + 1609^2 .

It is a cyclic number.

It is not a de Polignac number, because 12075281 - 2² = 12075277 is a prime.

It is a super-2 number, since 2×12075281² = 291624822457922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12075281.

It is not an unprimeable number, because it can be changed into a prime (12075289) 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, 208166 + ... + 208223.

It is an arithmetic number, because the mean of its divisors is an integer number (3122925).

Almost surely, 2^12075281 is an apocalyptic number.

It is an amenable number.

12075281 is a deficient number, since it is larger than the sum of its proper divisors (416419).

12075281 is an equidigital number, since it uses as much as digits as its factorization.

12075281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416418.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12075281 is about 3474.9505032446. The cubic root of 12075281 is about 229.4206021437.

The spelling of 12075281 in words is "twelve million, seventy-five thousand, two hundred eighty-one".