12542847 has 4 divisors (see below), whose sum is σ = 16723800. Its totient is φ = 8361896.

The previous prime is 12542839. The next prime is 12542851. The reversal of 12542847 is 74824521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74824521 = 3 ⋅24941507.

It is a cyclic number.

It is not a de Polignac number, because 12542847 - 2³ = 12542839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090472 + ... + 2090477.

It is an arithmetic number, because the mean of its divisors is an integer number (4180950).

Almost surely, 2^12542847 is an apocalyptic number.

12542847 is a deficient number, since it is larger than the sum of its proper divisors (4180953).

12542847 is an equidigital number, since it uses as much as digits as its factorization.

12542847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180952.

The product of its digits is 17920, while the sum is 33.

The square root of 12542847 is about 3541.5882030524. The cubic root of 12542847 is about 232.3443101513.

The spelling of 12542847 in words is "twelve million, five hundred forty-two thousand, eight hundred forty-seven".