12588421 has 2 divisors, whose sum is σ = 12588422. Its totient is φ = 12588420.

The previous prime is 12588397. The next prime is 12588437. The reversal of 12588421 is 12488521.

12588421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 408321 = 3490^2 + 639^2 .

It is an emirp because it is prime and its reverse (12488521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12588421 - 2²³ = 4199813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12588451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6294210 + 6294211.

It is an arithmetic number, because the mean of its divisors is an integer number (6294211).

Almost surely, 2^12588421 is an apocalyptic number.

It is an amenable number.

12588421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12588421 is an equidigital number, since it uses as much as digits as its factorization.

12588421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5120, while the sum is 31.

The square root of 12588421 is about 3548.0164881240. The cubic root of 12588421 is about 232.6253750128.

The spelling of 12588421 in words is "twelve million, five hundred eighty-eight thousand, four hundred twenty-one".