12542065 has 16 divisors (see below), whose sum is σ = 15814080. Its totient is φ = 9535680.

The previous prime is 12542059. The next prime is 12542069. The reversal of 12542065 is 56024521.

It is a de Polignac number, because none of the positive numbers 2^k-12542065 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12542069) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9070 + ... + 10360.

It is an arithmetic number, because the mean of its divisors is an integer number (988380).

Almost surely, 2^12542065 is an apocalyptic number.

It is an amenable number.

12542065 is a deficient number, since it is larger than the sum of its proper divisors (3272015).

12542065 is a wasteful number, since it uses less digits than its factorization.

12542065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 12542065 is about 3541.4777988857. The cubic root of 12542065 is about 232.3394814488.

Adding to 12542065 its reverse (56024521), we get a palindrome (68566586).

The spelling of 12542065 in words is "twelve million, five hundred forty-two thousand, sixty-five".