12506402 has 8 divisors (see below), whose sum is σ = 18806700. Its totient is φ = 6237504.

The previous prime is 12506401. The next prime is 12506447. The reversal of 12506402 is 20460521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11363641 + 1142761 = 3371^2 + 1069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12506401) 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, 6827 + ... + 8462.

Almost surely, 2^12506402 is an apocalyptic number.

12506402 is a deficient number, since it is larger than the sum of its proper divisors (6300298).

12506402 is a wasteful number, since it uses less digits than its factorization.

12506402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15700.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12506402 is about 3536.4391695603. The cubic root of 12506402 is about 232.1190555208.

Adding to 12506402 its reverse (20460521), we get a palindrome (32966923).

The spelling of 12506402 in words is "twelve million, five hundred six thousand, four hundred two".