12001256 has 8 divisors (see below), whose sum is σ = 22502370. Its totient is φ = 6000624.

The previous prime is 12001211. The next prime is 12001261. The reversal of 12001256 is 65210021.

It can be written as a sum of positive squares in only one way, i.e., 8797156 + 3204100 = 2966^2 + 1790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750071 + ... + 750086.

Almost surely, 2^12001256 is an apocalyptic number.

It is an amenable number.

12001256 is a deficient number, since it is larger than the sum of its proper divisors (10501114).

12001256 is a wasteful number, since it uses less digits than its factorization.

12001256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500163 (or 1500159 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12001256 is about 3464.2828983788. The cubic root of 12001256 is about 228.9508357936.

Adding to 12001256 its reverse (65210021), we get a palindrome (77211277).

The spelling of 12001256 in words is "twelve million, one thousand, two hundred fifty-six".