12256402 has 4 divisors (see below), whose sum is σ = 18384606. Its totient is φ = 6128200.

The previous prime is 12256399. The next prime is 12256403. The reversal of 12256402 is 20465221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10569001 + 1687401 = 3251^2 + 1299^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12256403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3064099 + ... + 3064102.

Almost surely, 2^12256402 is an apocalyptic number.

12256402 is a deficient number, since it is larger than the sum of its proper divisors (6128204).

12256402 is an equidigital number, since it uses as much as digits as its factorization.

12256402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6128203.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12256402 is about 3500.9144519682. The cubic root of 12256402 is about 230.5619654503.

The spelling of 12256402 in words is "twelve million, two hundred fifty-six thousand, four hundred two".