12126340 has 24 divisors (see below), whose sum is σ = 25587072. Its totient is φ = 4827360.

The previous prime is 12126319. The next prime is 12126349. The reversal of 12126340 is 4362121.

It is not an unprimeable number, because it can be changed into a prime (12126349) 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, 3205 + ... + 5875.

It is an arithmetic number, because the mean of its divisors is an integer number (1066128).

Almost surely, 2^12126340 is an apocalyptic number.

12126340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12126340 is an abundant number, since it is smaller than the sum of its proper divisors (13460732).

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

12126340 is a wasteful number, since it uses less digits than its factorization.

12126340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2905 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12126340 is about 3482.2894767667. The cubic root of 12126340 is about 229.7435073903.

Adding to 12126340 its reverse (4362121), we get a palindrome (16488461).

The spelling of 12126340 in words is "twelve million, one hundred twenty-six thousand, three hundred forty".