127120831 has 2 divisors, whose sum is σ = 127120832. Its totient is φ = 127120830.

The previous prime is 127120783. The next prime is 127120867. The reversal of 127120831 is 138021721.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (138021721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127120831 - 2⁹ = 127120319 is a prime.

It is a super-2 number, since 2×127120831² = 32319411348261122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127120796 and 127120805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127120531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63560415 + 63560416.

It is an arithmetic number, because the mean of its divisors is an integer number (63560416).

Almost surely, 2^127120831 is an apocalyptic number.

127120831 is a deficient number, since it is larger than the sum of its proper divisors (1).

127120831 is an equidigital number, since it uses as much as digits as its factorization.

127120831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 127120831 is about 11274.7874037607. The cubic root of 127120831 is about 502.8119311085.

The spelling of 127120831 in words is "one hundred twenty-seven million, one hundred twenty thousand, eight hundred thirty-one".