12499042 has 4 divisors (see below), whose sum is σ = 18748566. Its totient is φ = 6249520.

The previous prime is 12499037. The next prime is 12499057. The reversal of 12499042 is 24099421.

It is a happy number.

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., 11964681 + 534361 = 3459^2 + 731^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12498995 and 12499013.

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, 3124759 + ... + 3124762.

Almost surely, 2^12499042 is an apocalyptic number.

12499042 is a deficient number, since it is larger than the sum of its proper divisors (6249524).

12499042 is an equidigital number, since it uses as much as digits as its factorization.

12499042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249523.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12499042 is about 3535.3984216775. The cubic root of 12499042 is about 232.0735126730.

The spelling of 12499042 in words is "twelve million, four hundred ninety-nine thousand, forty-two".