127256791 has 2 divisors, whose sum is σ = 127256792. Its totient is φ = 127256790.

The previous prime is 127256761. The next prime is 127256803. The reversal of 127256791 is 197652721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127256791 - 2¹⁹ = 126732503 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127256711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63628395 + 63628396.

It is an arithmetic number, because the mean of its divisors is an integer number (63628396).

Almost surely, 2^127256791 is an apocalyptic number.

127256791 is a deficient number, since it is larger than the sum of its proper divisors (1).

127256791 is an equidigital number, since it uses as much as digits as its factorization.

127256791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 40.

The square root of 127256791 is about 11280.8151744455. The cubic root of 127256791 is about 502.9911253238.

The spelling of 127256791 in words is "one hundred twenty-seven million, two hundred fifty-six thousand, seven hundred ninety-one".