127665012 has 12 divisors (see below), whose sum is σ = 297885056. Its totient is φ = 42555000.

The previous prime is 127665001. The next prime is 127665073. The reversal of 127665012 is 210566721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319364 + ... + 5319387.

Almost surely, 2^127665012 is an apocalyptic number.

127665012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

127665012 is an abundant number, since it is smaller than the sum of its proper divisors (170220044).

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

127665012 is a wasteful number, since it uses less digits than its factorization.

127665012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638758 (or 10638756 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 127665012 is about 11298.8942821853. The cubic root of 127665012 is about 503.5283916686.

The spelling of 127665012 in words is "one hundred twenty-seven million, six hundred sixty-five thousand, twelve".