127215272 has 8 divisors (see below), whose sum is σ = 238528650. Its totient is φ = 63607632.

The previous prime is 127215271. The next prime is 127215281. The reversal of 127215272 is 272512721.

It can be written as a sum of positive squares in only one way, i.e., 95922436 + 31292836 = 9794^2 + 5594^2 .

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

It is not an unprimeable number, because it can be changed into a prime (127215271) 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 as a sum of consecutive naturals, namely, 7950947 + ... + 7950962.

Almost surely, 2^127215272 is an apocalyptic number.

It is an amenable number.

127215272 is a deficient number, since it is larger than the sum of its proper divisors (111313378).

127215272 is a wasteful number, since it uses less digits than its factorization.

127215272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901915 (or 15901911 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 127215272 is about 11278.9747761044. The cubic root of 127215272 is about 502.9364171495.

Adding to 127215272 its reverse (272512721), we get a palindrome (399727993).

The spelling of 127215272 in words is "one hundred twenty-seven million, two hundred fifteen thousand, two hundred seventy-two".