128719051 has 2 divisors, whose sum is σ = 128719052. Its totient is φ = 128719050.

The previous prime is 128719043. The next prime is 128719069. The reversal of 128719051 is 150917821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128719051 - 2³ = 128719043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128718998 and 128719016.

It is not a weakly prime, because it can be changed into another prime (128719001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64359525 + 64359526.

It is an arithmetic number, because the mean of its divisors is an integer number (64359526).

Almost surely, 2^128719051 is an apocalyptic number.

128719051 is a deficient number, since it is larger than the sum of its proper divisors (1).

128719051 is an equidigital number, since it uses as much as digits as its factorization.

128719051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 128719051 is about 11345.4418600599. The cubic root of 128719051 is about 504.9103536588.

It can be divided in two parts, 128 and 719051, that multiplied together give a triangular number (92038528 = T₁₃₅₆₇).

The spelling of 128719051 in words is "one hundred twenty-eight million, seven hundred nineteen thousand, fifty-one".