128079458542 has 16 divisors (see below), whose sum is σ = 219620229120. Its totient is φ = 54877335768.

The previous prime is 128079458539. The next prime is 128079458597. The reversal of 128079458542 is 245854970821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097542 + ... + 1208617.

It is an arithmetic number, because the mean of its divisors is an integer number (13726264320).

Almost surely, 2^128079458542 is an apocalyptic number.

128079458542 is a deficient number, since it is larger than the sum of its proper divisors (91540770578).

128079458542 is a wasteful number, since it uses less digits than its factorization.

128079458542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310135.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 128079458542 in words is "one hundred twenty-eight billion, seventy-nine million, four hundred fifty-eight thousand, five hundred forty-two".