7918720127 has 4 divisors (see below), whose sum is σ = 7919170896. Its totient is φ = 7918269360.

The previous prime is 7918720067. The next prime is 7918720133. The reversal of 7918720127 is 7210278197.

It is a happy number.

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 7918720127 - 2¹⁰ = 7918719103 is a prime.

It is a super-2 number, since 2×7918720127² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7918320127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197918 + ... + 234539.

It is an arithmetic number, because the mean of its divisors is an integer number (1979792724).

Almost surely, 2^7918720127 is an apocalyptic number.

7918720127 is a deficient number, since it is larger than the sum of its proper divisors (450769).

7918720127 is a wasteful number, since it uses less digits than its factorization.

7918720127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450768.

The product of its (nonzero) digits is 98784, while the sum is 44.

The square root of 7918720127 is about 88987.1908029465. The cubic root of 7918720127 is about 1993.2036079385.

The spelling of 7918720127 in words is "seven billion, nine hundred eighteen million, seven hundred twenty thousand, one hundred twenty-seven".