12126560 has 48 divisors (see below), whose sum is σ = 30164400. Its totient is φ = 4594176.

The previous prime is 12126557. The next prime is 12126571. The reversal of 12126560 is 6562121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 5034.

It is an arithmetic number, because the mean of its divisors is an integer number (628425).

Almost surely, 2^12126560 is an apocalyptic number.

12126560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12126560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15082200).

12126560 is an abundant number, since it is smaller than the sum of its proper divisors (18037840).

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

12126560 is a wasteful number, since it uses less digits than its factorization.

12126560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4023 (or 4015 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 12126560 is about 3482.3210650369. The cubic root of 12126560 is about 229.7448967423.

Adding to 12126560 its reverse (6562121), we get a palindrome (18688681).

The spelling of 12126560 in words is "twelve million, one hundred twenty-six thousand, five hundred sixty".