127935961 has 2 divisors, whose sum is σ = 127935962. Its totient is φ = 127935960.

The previous prime is 127935947. The next prime is 127935967. The reversal of 127935961 is 169539721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125552025 + 2383936 = 11205^2 + 1544^2 .

It is a cyclic number.

It is not a de Polignac number, because 127935961 - 2¹¹ = 127933913 is a prime.

It is a super-2 number, since 2×127935961² = 32735220233987042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127935967) 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 as a sum of consecutive naturals, namely, 63967980 + 63967981.

It is an arithmetic number, because the mean of its divisors is an integer number (63967981).

Almost surely, 2^127935961 is an apocalyptic number.

It is an amenable number.

127935961 is a deficient number, since it is larger than the sum of its proper divisors (1).

127935961 is an equidigital number, since it uses as much as digits as its factorization.

127935961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 43.

The square root of 127935961 is about 11310.8779942142. The cubic root of 127935961 is about 503.8843600169.

The spelling of 127935961 in words is "one hundred twenty-seven million, nine hundred thirty-five thousand, nine hundred sixty-one".