12126280 has 16 divisors (see below), whose sum is σ = 27284220. Its totient is φ = 4850496.

The previous prime is 12126223. The next prime is 12126299. The reversal of 12126280 is 8262121.

It can be written as a sum of positive squares in 2 ways, for example, as 11682724 + 443556 = 3418^2 + 666^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151539 + ... + 151618.

Almost surely, 2^12126280 is an apocalyptic number.

12126280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12126280 is an abundant number, since it is smaller than the sum of its proper divisors (15157940).

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

12126280 is a wasteful number, since it uses less digits than its factorization.

12126280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303168 (or 303164 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12126280 is about 3482.2808617342. The cubic root of 12126280 is about 229.7431284732.

The spelling of 12126280 in words is "twelve million, one hundred twenty-six thousand, two hundred eighty".