12499018 has 12 divisors (see below), whose sum is σ = 21809682. Its totient is φ = 5356680.

The previous prime is 12499001. The next prime is 12499021. The reversal of 12499018 is 81099421.

It can be written as a sum of positive squares in only one way, i.e., 8684809 + 3814209 = 2947^2 + 1953^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 63673 + ... + 63868.

Almost surely, 2^12499018 is an apocalyptic number.

12499018 is a deficient number, since it is larger than the sum of its proper divisors (9310664).

12499018 is a wasteful number, since it uses less digits than its factorization.

12499018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127557 (or 127550 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 12499018 is about 3535.3950274333. The cubic root of 12499018 is about 232.0733641345.

The spelling of 12499018 in words is "twelve million, four hundred ninety-nine thousand, eighteen".