2128021015442 has 16 divisors (see below), whose sum is σ = 3716866896192. Its totient is φ = 894801289200.

The previous prime is 2128021015423. The next prime is 2128021015451. The reversal of 2128021015442 is 2445101208212.

It is a junction number, because it is equal to n+sod(n) for n = 2128021015399 and 2128021015408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1433975684 + ... + 1433977167.

It is an arithmetic number, because the mean of its divisors is an integer number (232304181012).

Almost surely, 2^{2128021015442} is an apocalyptic number.

2128021015442 is a deficient number, since it is larger than the sum of its proper divisors (1588845880750).

2128021015442 is a wasteful number, since it uses less digits than its factorization.

2128021015442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867952913.

The product of its (nonzero) digits is 10240, while the sum is 32.

The spelling of 2128021015442 in words is "two trillion, one hundred twenty-eight billion, twenty-one million, fifteen thousand, four hundred forty-two".