123201256 has 32 divisors (see below), whose sum is σ = 236597760. Its totient is φ = 60121152.

The previous prime is 123201233. The next prime is 123201257. The reversal of 123201256 is 652102321.

It is not an unprimeable number, because it can be changed into a prime (123201257) 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, 93901 + ... + 95203.

It is an arithmetic number, because the mean of its divisors is an integer number (7393680).

Almost surely, 2^123201256 is an apocalyptic number.

It is an amenable number.

123201256 is a deficient number, since it is larger than the sum of its proper divisors (113396504).

123201256 is a wasteful number, since it uses less digits than its factorization.

123201256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 123201256 is about 11099.6061191377. The cubic root of 123201256 is about 497.5900778790.

Adding to 123201256 its reverse (652102321), we get a palindrome (775303577).

It can be divided in two parts, 123201 and 256, that multiplied together give a square (31539456 = 5616²).

The spelling of 123201256 in words is "one hundred twenty-three million, two hundred one thousand, two hundred fifty-six".