127391128 has 8 divisors (see below), whose sum is σ = 238858380. Its totient is φ = 63695560.

The previous prime is 127391083. The next prime is 127391161. The reversal of 127391128 is 821193721.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×127391128² = 32456998986224768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127391093 and 127391102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7961938 + ... + 7961953.

Almost surely, 2^127391128 is an apocalyptic number.

It is an amenable number.

127391128 is a deficient number, since it is larger than the sum of its proper divisors (111467252).

127391128 is a wasteful number, since it uses less digits than its factorization.

127391128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15923897 (or 15923893 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 127391128 is about 11286.7678278593. The cubic root of 127391128 is about 503.1680551249.

The spelling of 127391128 in words is "one hundred twenty-seven million, three hundred ninety-one thousand, one hundred twenty-eight".