127440261 has 48 divisors (see below), whose sum is σ = 206222016. Its totient is φ = 75333888.

The previous prime is 127440253. The next prime is 127440281. The reversal of 127440261 is 162044721.

It is not a de Polignac number, because 127440261 - 2³ = 127440253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127440241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 367090 + ... + 367436.

It is an arithmetic number, because the mean of its divisors is an integer number (4296292).

Almost surely, 2^127440261 is an apocalyptic number.

It is an amenable number.

127440261 is a deficient number, since it is larger than the sum of its proper divisors (78781755).

127440261 is a wasteful number, since it uses less digits than its factorization.

127440261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 479 counting only the distinct ones).

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

The square root of 127440261 is about 11288.9441933247. The cubic root of 127440261 is about 503.2327351352.

Adding to 127440261 its reverse (162044721), we get a palindrome (289484982).

The spelling of 127440261 in words is "one hundred twenty-seven million, four hundred forty thousand, two hundred sixty-one".