12540068 has 6 divisors (see below), whose sum is σ = 21945126. Its totient is φ = 6270032.

The previous prime is 12540049. The next prime is 12540109. The reversal of 12540068 is 86004521.

It can be written as a sum of positive squares in only one way, i.e., 11235904 + 1304164 = 3352^2 + 1142^2 .

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 as a sum of consecutive naturals, namely, 1567505 + ... + 1567512.

It is an arithmetic number, because the mean of its divisors is an integer number (3657521).

Almost surely, 2^12540068 is an apocalyptic number.

It is an amenable number.

12540068 is a deficient number, since it is larger than the sum of its proper divisors (9405058).

12540068 is a wasteful number, since it uses less digits than its factorization.

12540068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135021 (or 3135019 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 12540068 is about 3541.1958432145. The cubic root of 12540068 is about 232.3271494399.

Adding to 12540068 its reverse (86004521), we get a palindrome (98544589).

The spelling of 12540068 in words is "twelve million, five hundred forty thousand, sixty-eight".