12127069 has 4 divisors (see below), whose sum is σ = 12840444. Its totient is φ = 11413696.

The previous prime is 12127061. The next prime is 12127091. The reversal of 12127069 is 96072121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4782969 + 7344100 = 2187^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 12127069 - 2³ = 12127061 is a prime.

It is a super-2 number, since 2×12127069² = 294131605061522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127061) 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 3 ways as a sum of consecutive naturals, for example, 356662 + ... + 356695.

It is an arithmetic number, because the mean of its divisors is an integer number (3210111).

Almost surely, 2^12127069 is an apocalyptic number.

It is an amenable number.

12127069 is a deficient number, since it is larger than the sum of its proper divisors (713375).

12127069 is an equidigital number, since it uses as much as digits as its factorization.

12127069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713374.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 12127069 is about 3482.3941477093. The cubic root of 12127069 is about 229.7481111333.

It can be divided in two parts, 1212 and 7069, that added together give a square (8281 = 91²).

The spelling of 12127069 in words is "twelve million, one hundred twenty-seven thousand, sixty-nine".