12650042 has 4 divisors (see below), whose sum is σ = 18975066. Its totient is φ = 6325020.

The previous prime is 12650021. The next prime is 12650051. The reversal of 12650042 is 24005621.

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., 10118761 + 2531281 = 3181^2 + 1591^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12649996 and 12650023.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162509 + ... + 3162512.

Almost surely, 2^12650042 is an apocalyptic number.

12650042 is a deficient number, since it is larger than the sum of its proper divisors (6325024).

12650042 is an equidigital number, since it uses as much as digits as its factorization.

12650042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325023.

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

The square root of 12650042 is about 3556.6897531272. The cubic root of 12650042 is about 233.0043286050.

Adding to 12650042 its reverse (24005621), we get a palindrome (36655663).

The spelling of 12650042 in words is "twelve million, six hundred fifty thousand, forty-two".