128751479 has 2 divisors, whose sum is σ = 128751480. Its totient is φ = 128751478.

The previous prime is 128751443. The next prime is 128751529. The reversal of 128751479 is 974157821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128751479 - 2²⁰ = 127702903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128751179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64375739 + 64375740.

It is an arithmetic number, because the mean of its divisors is an integer number (64375740).

Almost surely, 2^128751479 is an apocalyptic number.

128751479 is a deficient number, since it is larger than the sum of its proper divisors (1).

128751479 is an equidigital number, since it uses as much as digits as its factorization.

128751479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 44.

The square root of 128751479 is about 11346.8708902499. The cubic root of 128751479 is about 504.9527505380.

The spelling of 128751479 in words is "one hundred twenty-eight million, seven hundred fifty-one thousand, four hundred seventy-nine".