127144506421 has 12 divisors (see below), whose sum is σ = 139420439680. Its totient is φ = 115805234880.

The previous prime is 127144506383. The next prime is 127144506427. The reversal of 127144506421 is 124605441721.

It is not a de Polignac number, because 127144506421 - 2⁹ = 127144505909 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 (127144506427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7086951 + ... + 7104868.

Almost surely, 2^127144506421 is an apocalyptic number.

It is an amenable number.

127144506421 is a deficient number, since it is larger than the sum of its proper divisors (12275933259).

127144506421 is a wasteful number, since it uses less digits than its factorization.

127144506421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14191884 (or 14191867 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 127144506421 in words is "one hundred twenty-seven billion, one hundred forty-four million, five hundred six thousand, four hundred twenty-one".