127999873 has 2 divisors, whose sum is σ = 127999874. Its totient is φ = 127999872.

The previous prime is 127999867. The next prime is 127999897. The reversal of 127999873 is 378999721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127757809 + 242064 = 11303^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 127999873 - 2¹³ = 127991681 is a prime.

It is a super-2 number, since 2×127999873² = 32767934976032258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (127999373) 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, 63999936 + 63999937.

It is an arithmetic number, because the mean of its divisors is an integer number (63999937).

Almost surely, 2^127999873 is an apocalyptic number.

It is an amenable number.

127999873 is a deficient number, since it is larger than the sum of its proper divisors (1).

127999873 is an equidigital number, since it uses as much as digits as its factorization.

127999873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 55.

The square root of 127999873 is about 11313.7028863233. The cubic root of 127999873 is about 503.9682532808.

It can be divided in two parts, 127 and 999873, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 127999873 in words is "one hundred twenty-seven million, nine hundred ninety-nine thousand, eight hundred seventy-three".