12503434 has 4 divisors (see below), whose sum is σ = 18755154. Its totient is φ = 6251716.

The previous prime is 12503429. The next prime is 12503441. The reversal of 12503434 is 43430521.

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., 7868025 + 4635409 = 2805^2 + 2153^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3125857 + ... + 3125860.

Almost surely, 2^12503434 is an apocalyptic number.

12503434 is a deficient number, since it is larger than the sum of its proper divisors (6251720).

12503434 is an equidigital number, since it uses as much as digits as its factorization.

12503434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251719.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 12503434 is about 3536.0195135208. The cubic root of 12503434 is about 232.1006920229.

Adding to 12503434 its reverse (43430521), we get a palindrome (55933955).

The spelling of 12503434 in words is "twelve million, five hundred three thousand, four hundred thirty-four".