127713919 has 2 divisors, whose sum is σ = 127713920. Its totient is φ = 127713918.

The previous prime is 127713889. The next prime is 127713947. The reversal of 127713919 is 919317721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127713919 - 2²¹ = 125616767 is a prime.

It is a super-2 number, since 2×127713919² = 32621690212677122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127713119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63856959 + 63856960.

It is an arithmetic number, because the mean of its divisors is an integer number (63856960).

Almost surely, 2^127713919 is an apocalyptic number.

127713919 is a deficient number, since it is larger than the sum of its proper divisors (1).

127713919 is an equidigital number, since it uses as much as digits as its factorization.

127713919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814, while the sum is 40.

The square root of 127713919 is about 11301.0583132731. The cubic root of 127713919 is about 503.5926821078.

The spelling of 127713919 in words is "one hundred twenty-seven million, seven hundred thirteen thousand, nine hundred nineteen".