12421727 has 2 divisors, whose sum is σ = 12421728. Its totient is φ = 12421726.

The previous prime is 12421709. The next prime is 12421757. The reversal of 12421727 is 72712421.

It is a weak prime.

It is an emirp because it is prime and its reverse (72712421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12421727 - 2¹⁰ = 12420703 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12421696 and 12421705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12421757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210863 + 6210864.

It is an arithmetic number, because the mean of its divisors is an integer number (6210864).

Almost surely, 2^12421727 is an apocalyptic number.

12421727 is a deficient number, since it is larger than the sum of its proper divisors (1).

12421727 is an equidigital number, since it uses as much as digits as its factorization.

12421727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 26.

The square root of 12421727 is about 3524.4470488291. The cubic root of 12421727 is about 231.5940122621.

The spelling of 12421727 in words is "twelve million, four hundred twenty-one thousand, seven hundred twenty-seven".