127120408172 has 6 divisors (see below), whose sum is σ = 222460714308. Its totient is φ = 63560204084.

The previous prime is 127120408169. The next prime is 127120408213. The reversal of 127120408172 is 271804021721.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15890051018 + ... + 15890051025.

It is an arithmetic number, because the mean of its divisors is an integer number (37076785718).

Almost surely, 2^127120408172 is an apocalyptic number.

It is an amenable number.

127120408172 is a deficient number, since it is larger than the sum of its proper divisors (95340306136).

127120408172 is a wasteful number, since it uses less digits than its factorization.

127120408172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31780102047 (or 31780102045 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

Adding to 127120408172 its reverse (271804021721), we get a palindrome (398924429893).

The spelling of 127120408172 in words is "one hundred twenty-seven billion, one hundred twenty million, four hundred eight thousand, one hundred seventy-two".