127199812 has 18 divisors (see below), whose sum is σ = 223940094. Its totient is φ = 63218880.

The previous prime is 127199777. The next prime is 127199819. The reversal of 127199812 is 218991721.

It can be written as a sum of positive squares in only one way, i.e., 84897796 + 42302016 = 9214^2 + 6504^2 .

It is not an unprimeable number, because it can be changed into a prime (127199819) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 293548 + ... + 293980.

Almost surely, 2^127199812 is an apocalyptic number.

It is an amenable number.

127199812 is a deficient number, since it is larger than the sum of its proper divisors (96740282).

127199812 is an equidigital number, since it uses as much as digits as its factorization.

127199812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 706 counting only the distinct ones).

The product of its digits is 18144, while the sum is 40.

The square root of 127199812 is about 11278.2894093032. The cubic root of 127199812 is about 502.9160429919.

The spelling of 127199812 in words is "one hundred twenty-seven million, one hundred ninety-nine thousand, eight hundred twelve".