127743123097 has 4 divisors (see below), whose sum is σ = 129007906596. Its totient is φ = 126478339600.

The previous prime is 127743123077. The next prime is 127743123119. The reversal of 127743123097 is 790321347721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790321347721 = 23 ⋅34361797727.

It can be written as a sum of positive squares in 2 ways, for example, as 124262595081 + 3480528016 = 352509^2 + 58996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127743123097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127743123017) 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, 632391598 + ... + 632391799.

It is an arithmetic number, because the mean of its divisors is an integer number (32251976649).

Almost surely, 2^127743123097 is an apocalyptic number.

It is an amenable number.

127743123097 is a deficient number, since it is larger than the sum of its proper divisors (1264783499).

127743123097 is a wasteful number, since it uses less digits than its factorization.

127743123097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264783498.

The product of its (nonzero) digits is 444528, while the sum is 46.

The spelling of 127743123097 in words is "one hundred twenty-seven billion, seven hundred forty-three million, one hundred twenty-three thousand, ninety-seven".