12140256 has 24 divisors (see below), whose sum is σ = 31868424. Its totient is φ = 4046720.

The previous prime is 12140243. The next prime is 12140257. The reversal of 12140256 is 65204121.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140257) 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 in 3 ways as a sum of consecutive naturals, for example, 63135 + ... + 63326.

It is an arithmetic number, because the mean of its divisors is an integer number (1327851).

Almost surely, 2^12140256 is an apocalyptic number.

12140256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12140256 is an abundant number, since it is smaller than the sum of its proper divisors (19728168).

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

12140256 is a wasteful number, since it uses less digits than its factorization.

12140256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126474 (or 126466 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12140256 is about 3484.2870145842. The cubic root of 12140256 is about 229.8313571576.

Adding to 12140256 its reverse (65204121), we get a palindrome (77344377).

The spelling of 12140256 in words is "twelve million, one hundred forty thousand, two hundred fifty-six".