12140871 has 8 divisors (see below), whose sum is σ = 16710144. Its totient is φ = 7832760.

The previous prime is 12140861. The next prime is 12140903. The reversal of 12140871 is 17804121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12140871 - 2¹⁰ = 12139847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65181 + ... + 65366.

It is an arithmetic number, because the mean of its divisors is an integer number (2088768).

Almost surely, 2^12140871 is an apocalyptic number.

12140871 is a deficient number, since it is larger than the sum of its proper divisors (4569273).

12140871 is a wasteful number, since it uses less digits than its factorization.

12140871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130581.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 12140871 is about 3484.3752668161. The cubic root of 12140871 is about 229.8352380175.

Adding to 12140871 its reverse (17804121), we get a palindrome (29944992).

The spelling of 12140871 in words is "twelve million, one hundred forty thousand, eight hundred seventy-one".