12521842 has 8 divisors (see below), whose sum is σ = 18837936. Its totient is φ = 6242532.

The previous prime is 12521837. The next prime is 12521857. The reversal of 12521842 is 24812521.

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, 8328 + ... + 9715.

It is an arithmetic number, because the mean of its divisors is an integer number (2354742).

Almost surely, 2^12521842 is an apocalyptic number.

12521842 is a deficient number, since it is larger than the sum of its proper divisors (6316094).

12521842 is a wasteful number, since it uses less digits than its factorization.

12521842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18392.

The product of its digits is 1280, while the sum is 25.

The square root of 12521842 is about 3538.6214830072. The cubic root of 12521842 is about 232.2145384680.

The spelling of 12521842 in words is "twelve million, five hundred twenty-one thousand, eight hundred forty-two".