12540006 has 24 divisors (see below), whose sum is σ = 28108080. Its totient is φ = 4035696.

The previous prime is 12539993. The next prime is 12540041. The reversal of 12540006 is 60004521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11490 + ... + 12533.

It is an arithmetic number, because the mean of its divisors is an integer number (1171170).

Almost surely, 2^12540006 is an apocalyptic number.

12540006 is an abundant number, since it is smaller than the sum of its proper divisors (15568074).

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

12540006 is a wasteful number, since it uses less digits than its factorization.

12540006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24060 (or 24057 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12540006 is about 3541.1870890988. The cubic root of 12540006 is about 232.3267665524.

Adding to 12540006 its reverse (60004521), we get a palindrome (72544527).

The spelling of 12540006 in words is "twelve million, five hundred forty thousand, six".