127938981420 has 36 divisors (see below), whose sum is σ = 388081577520. Its totient is φ = 34117061664.

The previous prime is 127938981367. The next prime is 127938981431. The reversal of 127938981420 is 24189839721.

127938981420 is a `hidden beast` number, since 127 + 9 + 3 + 8 + 98 + 1 + 420 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355385880 + ... + 355386239.

It is an arithmetic number, because the mean of its divisors is an integer number (10780043820).

Almost surely, 2^127938981420 is an apocalyptic number.

127938981420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127938981420 is an abundant number, since it is smaller than the sum of its proper divisors (260142596100).

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

127938981420 is a wasteful number, since it uses less digits than its factorization.

127938981420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710772134 (or 710772129 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 127938981420 in words is "one hundred twenty-seven billion, nine hundred thirty-eight million, nine hundred eighty-one thousand, four hundred twenty".