12126530 has 16 divisors (see below), whose sum is σ = 23507064. Its totient is φ = 4477440.

The previous prime is 12126509. The next prime is 12126533. The reversal of 12126530 is 3562121.

It can be written as a sum of positive squares in 4 ways, for example, as 10936249 + 1190281 = 3307^2 + 1091^2 .

It is not an unprimeable number, because it can be changed into a prime (12126533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46511 + ... + 46770.

Almost surely, 2^12126530 is an apocalyptic number.

12126530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12126530 is a deficient number, since it is larger than the sum of its proper divisors (11380534).

12126530 is a wasteful number, since it uses less digits than its factorization.

12126530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93301.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12126530 is about 3482.3167575624. The cubic root of 12126530 is about 229.7447072862.

Adding to 12126530 its reverse (3562121), we get a palindrome (15688651).

The spelling of 12126530 in words is "twelve million, one hundred twenty-six thousand, five hundred thirty".