127740897 has 12 divisors (see below), whose sum is σ = 184764580. Its totient is φ = 85045248.

The previous prime is 127740889. The next prime is 127740913. The reversal of 127740897 is 798047721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72743841 + 54997056 = 8529^2 + 7416^2 .

It is not a de Polignac number, because 127740897 - 2³ = 127740889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127740817) 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, 2308 + ... + 16149.

Almost surely, 2^127740897 is an apocalyptic number.

It is an amenable number.

127740897 is a deficient number, since it is larger than the sum of its proper divisors (57023683).

127740897 is a wasteful number, since it uses less digits than its factorization.

127740897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19232 (or 19229 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 127740897 is about 11302.2518552720. The cubic root of 127740897 is about 503.6281388718.

The spelling of 127740897 in words is "one hundred twenty-seven million, seven hundred forty thousand, eight hundred ninety-seven".