12517842 has 16 divisors (see below), whose sum is σ = 26124480. Its totient is φ = 3991152.

The previous prime is 12517829. The next prime is 12517847. The reversal of 12517842 is 24871521.

12517842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12517847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45217 + ... + 45492.

It is an arithmetic number, because the mean of its divisors is an integer number (1632780).

Almost surely, 2^12517842 is an apocalyptic number.

12517842 is an abundant number, since it is smaller than the sum of its proper divisors (13606638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12517842 is a wasteful number, since it uses less digits than its factorization.

12517842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90737.

The product of its digits is 4480, while the sum is 30.

The square root of 12517842 is about 3538.0562460198. The cubic root of 12517842 is about 232.1898094897.

The spelling of 12517842 in words is "twelve million, five hundred seventeen thousand, eight hundred forty-two".