12126765 has 32 divisors (see below), whose sum is σ = 22636800. Its totient is φ = 5541312.

The previous prime is 12126761. The next prime is 12126791. The reversal of 12126765 is 56762121.

It is not a de Polignac number, because 12126765 - 2² = 12126761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3967 + ... + 6323.

It is an arithmetic number, because the mean of its divisors is an integer number (707400).

Almost surely, 2^12126765 is an apocalyptic number.

12126765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12126765 is a deficient number, since it is larger than the sum of its proper divisors (10510035).

12126765 is an equidigital number, since it uses as much as digits as its factorization.

12126765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386 (or 2372 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 12126765 is about 3482.3504993036. The cubic root of 12126765 is about 229.7461913507.

Adding to 12126765 its reverse (56762121), we get a palindrome (68888886).

The spelling of 12126765 in words is "twelve million, one hundred twenty-six thousand, seven hundred sixty-five".