12543006 has 32 divisors (see below), whose sum is σ = 29069568. Its totient is φ = 3533760.

The previous prime is 12542989. The next prime is 12543053. The reversal of 12543006 is 60034521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (908424).

Almost surely, 2^12543006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12543006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14534784).

12543006 is an abundant number, since it is smaller than the sum of its proper divisors (16526562).

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

12543006 is a wasteful number, since it uses less digits than its factorization.

12543006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 12543006 is about 3541.6106505374. The cubic root of 12543006 is about 232.3452919217.

Adding to 12543006 its reverse (60034521), we get a palindrome (72577527).

The spelling of 12543006 in words is "twelve million, five hundred forty-three thousand, six".