12126969 has 16 divisors (see below), whose sum is σ = 18147840. Its totient is φ = 8002800.

The previous prime is 12126953. The next prime is 12126971. The reversal of 12126969 is 96962121.

It is not a de Polignac number, because 12126969 - 2⁴ = 12126953 is a prime.

It is a super-3 number, since 3×12126969³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12126469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504 + ... + 4950.

It is an arithmetic number, because the mean of its divisors is an integer number (1134240).

Almost surely, 2^12126969 is an apocalyptic number.

It is an amenable number.

12126969 is a deficient number, since it is larger than the sum of its proper divisors (6020871).

12126969 is a wasteful number, since it uses less digits than its factorization.

12126969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557 (or 4551 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 12126969 is about 3482.3797897415. The cubic root of 12126969 is about 229.7474796294.

The spelling of 12126969 in words is "twelve million, one hundred twenty-six thousand, nine hundred sixty-nine".