128012413 has 2 divisors, whose sum is σ = 128012414. Its totient is φ = 128012412.

The previous prime is 128012407. The next prime is 128012447. The reversal of 128012413 is 314210821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99261369 + 28751044 = 9963^2 + 5362^2 .

It is an emirp because it is prime and its reverse (314210821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128012413 - 2⁹ = 128011901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128012473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64006206 + 64006207.

It is an arithmetic number, because the mean of its divisors is an integer number (64006207).

Almost surely, 2^128012413 is an apocalyptic number.

It is an amenable number.

128012413 is a deficient number, since it is larger than the sum of its proper divisors (1).

128012413 is an equidigital number, since it uses as much as digits as its factorization.

128012413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 128012413 is about 11314.2570679652. The cubic root of 128012413 is about 503.9847104730.

The spelling of 128012413 in words is "one hundred twenty-eight million, twelve thousand, four hundred thirteen".