12140081 has 2 divisors, whose sum is σ = 12140082. Its totient is φ = 12140080.

The previous prime is 12140071. The next prime is 12140111. The reversal of 12140081 is 18004121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 2002225 = 3184^2 + 1415^2 .

It is an emirp because it is prime and its reverse (18004121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12140081 is a prime.

It is a super-2 number, since 2×12140081² = 294763133373122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12140071) 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 as a sum of consecutive naturals, namely, 6070040 + 6070041.

It is an arithmetic number, because the mean of its divisors is an integer number (6070041).

Almost surely, 2^12140081 is an apocalyptic number.

It is an amenable number.

12140081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12140081 is an equidigital number, since it uses as much as digits as its factorization.

12140081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12140081 is about 3484.2619017519. The cubic root of 12140081 is about 229.8302528239.

The spelling of 12140081 in words is "twelve million, one hundred forty thousand, eighty-one".