127640241 has 6 divisors (see below), whose sum is σ = 184369250. Its totient is φ = 85093488.

The previous prime is 127640209. The next prime is 127640251. The reversal of 127640241 is 142046721.

127640241 is a `hidden beast` number, since 12 + 7 + 640 + 2 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99920016 + 27720225 = 9996^2 + 5265^2 .

It is not a de Polignac number, because 127640241 - 2⁵ = 127640209 is a prime.

It is a super-2 number, since 2×127640241² = 32584062245076162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127640251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7091116 + ... + 7091133.

Almost surely, 2^127640241 is an apocalyptic number.

It is an amenable number.

127640241 is a deficient number, since it is larger than the sum of its proper divisors (56729009).

127640241 is a wasteful number, since it uses less digits than its factorization.

127640241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14182255 (or 14182252 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 127640241 is about 11297.7980597991. The cubic root of 127640241 is about 503.4958228168.

Adding to 127640241 its reverse (142046721), we get a palindrome (269686962).

The spelling of 127640241 in words is "one hundred twenty-seven million, six hundred forty thousand, two hundred forty-one".