127144242919 has 4 divisors (see below), whose sum is σ = 127704349944. Its totient is φ = 126584135896.

The previous prime is 127144242881. The next prime is 127144242923. The reversal of 127144242919 is 919242441721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919242441721 = 31 ⋅29652981991.

It is a cyclic number.

It is not a de Polignac number, because 127144242919 - 2¹⁹ = 127143718631 is a prime.

It is a super-2 number, since 2×127144242919² (a number of 23 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 (127144246919) 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, 280053172 + ... + 280053625.

It is an arithmetic number, because the mean of its divisors is an integer number (31926087486).

Almost surely, 2^127144242919 is an apocalyptic number.

127144242919 is a deficient number, since it is larger than the sum of its proper divisors (560107025).

127144242919 is an equidigital number, since it uses as much as digits as its factorization.

127144242919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560107024.

The product of its digits is 290304, while the sum is 46.

The spelling of 127144242919 in words is "one hundred twenty-seven billion, one hundred forty-four million, two hundred forty-two thousand, nine hundred nineteen".