127256641 has 4 divisors (see below), whose sum is σ = 127372500. Its totient is φ = 127140784.

The previous prime is 127256627. The next prime is 127256659. The reversal of 127256641 is 146652721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12852225 + 114404416 = 3585^2 + 10696^2 .

It is a cyclic number.

It is not a de Polignac number, because 127256641 - 2¹¹ = 127254593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127256597 and 127256606.

It is not an unprimeable number, because it can be changed into a prime (127256141) 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, 56266 + ... + 58483.

It is an arithmetic number, because the mean of its divisors is an integer number (31843125).

Almost surely, 2^127256641 is an apocalyptic number.

It is an amenable number.

127256641 is a deficient number, since it is larger than the sum of its proper divisors (115859).

127256641 is a wasteful number, since it uses less digits than its factorization.

127256641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115858.

The product of its digits is 20160, while the sum is 34.

The square root of 127256641 is about 11280.8085259878. The cubic root of 127256641 is about 502.9909276953.

The spelling of 127256641 in words is "one hundred twenty-seven million, two hundred fifty-six thousand, six hundred forty-one".