127140012687 has 4 divisors (see below), whose sum is σ = 169520016920. Its totient is φ = 84760008456.

The previous prime is 127140012667. The next prime is 127140012719. The reversal of 127140012687 is 786210041721.

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

It is not a de Polignac number, because 127140012687 - 2¹¹ = 127140010639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127140012667) 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, 21190002112 + ... + 21190002117.

It is an arithmetic number, because the mean of its divisors is an integer number (42380004230).

Almost surely, 2^127140012687 is an apocalyptic number.

127140012687 is a deficient number, since it is larger than the sum of its proper divisors (42380004233).

127140012687 is an equidigital number, since it uses as much as digits as its factorization.

127140012687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42380004232.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 127140012687 in words is "one hundred twenty-seven billion, one hundred forty million, twelve thousand, six hundred eighty-seven".