123264256 has 18 divisors (see below), whose sum is σ = 246047522. Its totient is φ = 61632000.

The previous prime is 123264247. The next prime is 123264257. The reversal of 123264256 is 652462321.

It can be written as a sum of positive squares in only one way, i.e., 116294656 + 6969600 = 10784^2 + 2640^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123264257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240495 + ... + 241006.

Almost surely, 2^123264256 is an apocalyptic number.

123264256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123264256 is a deficient number, since it is larger than the sum of its proper divisors (122783266).

123264256 is an frugal number, since it uses more digits than its factorization.

123264256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481517 (or 481503 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 123264256 is about 11102.4436949709. The cubic root of 123264256 is about 497.6748790519.

The spelling of 123264256 in words is "one hundred twenty-three million, two hundred sixty-four thousand, two hundred fifty-six".