127116649 has 4 divisors (see below), whose sum is σ = 138672720. Its totient is φ = 115560580.

The previous prime is 127116641. The next prime is 127116659. The reversal of 127116649 is 946611721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 946611721 = 11 ⋅86055611.

It is a cyclic number.

It is not a de Polignac number, because 127116649 - 2³ = 127116641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127116641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5778019 + ... + 5778040.

It is an arithmetic number, because the mean of its divisors is an integer number (34668180).

Almost surely, 2^127116649 is an apocalyptic number.

It is an amenable number.

127116649 is a deficient number, since it is larger than the sum of its proper divisors (11556071).

127116649 is a wasteful number, since it uses less digits than its factorization.

127116649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556070.

The product of its digits is 18144, while the sum is 37.

The square root of 127116649 is about 11274.6019441930. The cubic root of 127116649 is about 502.8064172402.

It can be divided in two parts, 1271166 and 49, that added together give a triangular number (1271215 = T₁₅₉₄).

The spelling of 127116649 in words is "one hundred twenty-seven million, one hundred sixteen thousand, six hundred forty-nine".