127042663 has 4 divisors (see below), whose sum is σ = 138592008. Its totient is φ = 115493320.

The previous prime is 127042651. The next prime is 127042667. The reversal of 127042663 is 366240721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 127042663 - 2²⁵ = 93488231 is a prime.

It is a super-2 number, since 2×127042663² = 32279676444263138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127042667) 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 3 ways as a sum of consecutive naturals, for example, 5774656 + ... + 5774677.

It is an arithmetic number, because the mean of its divisors is an integer number (34648002).

Almost surely, 2^127042663 is an apocalyptic number.

127042663 is a deficient number, since it is larger than the sum of its proper divisors (11549345).

127042663 is a wasteful number, since it uses less digits than its factorization.

127042663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11549344.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 127042663 is about 11271.3203751823. The cubic root of 127042663 is about 502.7088484440.

The spelling of 127042663 in words is "one hundred twenty-seven million, forty-two thousand, six hundred sixty-three".