128442105400 has 96 divisors (see below), whose sum is σ = 344309703840. Its totient is φ = 43647528960.

The previous prime is 128442105373. The next prime is 128442105443. The reversal of 128442105400 is 4501244821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247749 + ... + 564148.

It is an arithmetic number, because the mean of its divisors is an integer number (3586559415).

Almost surely, 2^128442105400 is an apocalyptic number.

128442105400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128442105400 is an abundant number, since it is smaller than the sum of its proper divisors (215867598440).

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

128442105400 is a wasteful number, since it uses less digits than its factorization.

128442105400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812033 (or 812024 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The spelling of 128442105400 in words is "one hundred twenty-eight billion, four hundred forty-two million, one hundred five thousand, four hundred".