12505442 has 8 divisors (see below), whose sum is σ = 18826716. Its totient is φ = 6229872.

The previous prime is 12505417. The next prime is 12505457. The reversal of 12505442 is 24450521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10106041 + 2399401 = 3179^2 + 1549^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 10733 + ... + 11840.

Almost surely, 2^12505442 is an apocalyptic number.

12505442 is a deficient number, since it is larger than the sum of its proper divisors (6321274).

12505442 is a wasteful number, since it uses less digits than its factorization.

12505442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22852.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12505442 is about 3536.3034372067. The cubic root of 12505442 is about 232.1131161628.

Adding to 12505442 its reverse (24450521), we get a palindrome (36955963).

The spelling of 12505442 in words is "twelve million, five hundred five thousand, four hundred forty-two".