128414239 has 2 divisors, whose sum is σ = 128414240. Its totient is φ = 128414238.

The previous prime is 128414203. The next prime is 128414249. The reversal of 128414239 is 932414821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128414239 - 2¹⁵ = 128381471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128414249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64207119 + 64207120.

It is an arithmetic number, because the mean of its divisors is an integer number (64207120).

Almost surely, 2^128414239 is an apocalyptic number.

128414239 is a deficient number, since it is larger than the sum of its proper divisors (1).

128414239 is an equidigital number, since it uses as much as digits as its factorization.

128414239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 128414239 is about 11332.0006618426. Note that the first 3 decimals coincide. The cubic root of 128414239 is about 504.5114891647.

The spelling of 128414239 in words is "one hundred twenty-eight million, four hundred fourteen thousand, two hundred thirty-nine".