127375813 has 2 divisors, whose sum is σ = 127375814. Its totient is φ = 127375812.

The previous prime is 127375811. The next prime is 127375837. The reversal of 127375813 is 318573721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126832644 + 543169 = 11262^2 + 737^2 .

It is an emirp because it is prime and its reverse (318573721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127375813 - 2¹ = 127375811 is a prime.

Together with 127375811, it forms a pair of twin primes.

It is equal to p_7237549 and since 127375813 and 7237549 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127375811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63687906 + 63687907.

It is an arithmetic number, because the mean of its divisors is an integer number (63687907).

Almost surely, 2^127375813 is an apocalyptic number.

It is an amenable number.

127375813 is a deficient number, since it is larger than the sum of its proper divisors (1).

127375813 is an equidigital number, since it uses as much as digits as its factorization.

127375813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 127375813 is about 11286.0893581435. The cubic root of 127375813 is about 503.1478906448.

The spelling of 127375813 in words is "one hundred twenty-seven million, three hundred seventy-five thousand, eight hundred thirteen".