10128439 has 2 divisors, whose sum is σ = 10128440. Its totient is φ = 10128438.

The previous prime is 10128431. The next prime is 10128451. The reversal of 10128439 is 93482101.

It is a happy number.

10128439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10128439 - 2³ = 10128431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10128431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5064219 + 5064220.

It is an arithmetic number, because the mean of its divisors is an integer number (5064220).

Almost surely, 2^10128439 is an apocalyptic number.

10128439 is a deficient number, since it is larger than the sum of its proper divisors (1).

10128439 is an equidigital number, since it uses as much as digits as its factorization.

10128439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 10128439 is about 3182.5208561768. The cubic root of 10128439 is about 216.3619260885.

The spelling of 10128439 in words is "ten million, one hundred twenty-eight thousand, four hundred thirty-nine".