12140286 has 16 divisors (see below), whose sum is σ = 24739344. Its totient is φ = 3970304.

The previous prime is 12140273. The next prime is 12140287. The reversal of 12140286 is 68204121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18771 + ... + 19406.

It is an arithmetic number, because the mean of its divisors is an integer number (1546209).

Almost surely, 2^12140286 is an apocalyptic number.

12140286 is an abundant number, since it is smaller than the sum of its proper divisors (12599058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12140286 is a wasteful number, since it uses less digits than its factorization.

12140286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38235.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12140286 is about 3484.2913196230. The cubic root of 12140286 is about 229.8315464709.

The spelling of 12140286 in words is "twelve million, one hundred forty thousand, two hundred eighty-six".