127125101 has 2 divisors, whose sum is σ = 127125102. Its totient is φ = 127125100.

The previous prime is 127125077. The next prime is 127125109. The reversal of 127125101 is 101521721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87422500 + 39702601 = 9350^2 + 6301^2 .

It is a cyclic number.

It is not a de Polignac number, because 127125101 - 2¹⁰ = 127124077 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 (127125109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63562550 + 63562551.

It is an arithmetic number, because the mean of its divisors is an integer number (63562551).

Almost surely, 2^127125101 is an apocalyptic number.

It is an amenable number.

127125101 is a deficient number, since it is larger than the sum of its proper divisors (1).

127125101 is an equidigital number, since it uses as much as digits as its factorization.

127125101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 127125101 is about 11274.9767627255. The cubic root of 127125101 is about 502.8175608779.

Adding to 127125101 its reverse (101521721), we get a palindrome (228646822).

The spelling of 127125101 in words is "one hundred twenty-seven million, one hundred twenty-five thousand, one hundred one".