128572838530842 has 32 divisors (see below), whose sum is σ = 260057956112640. Its totient is φ = 42372318193920.

The previous prime is 128572838530813. The next prime is 128572838530859. The reversal of 128572838530842 is 248035838275821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4603243 + ... + 16683390.

It is an arithmetic number, because the mean of its divisors is an integer number (8126811128520).

Almost surely, 2^{128572838530842} is an apocalyptic number.

128572838530842 is an abundant number, since it is smaller than the sum of its proper divisors (131485117581798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128572838530842 is a wasteful number, since it uses less digits than its factorization.

128572838530842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21298038.

The product of its (nonzero) digits is 206438400, while the sum is 66.

The spelling of 128572838530842 in words is "one hundred twenty-eight trillion, five hundred seventy-two billion, eight hundred thirty-eight million, five hundred thirty thousand, eight hundred forty-two".