127999000 has 64 divisors (see below), whose sum is σ = 309254400. Its totient is φ = 49536000.

The previous prime is 127998971. The next prime is 127999033. The reversal of 127999000 is 999721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28936 + ... + 33064.

It is an arithmetic number, because the mean of its divisors is an integer number (4832100).

Almost surely, 2^127999000 is an apocalyptic number.

127999000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127999000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154627200).

127999000 is an abundant number, since it is smaller than the sum of its proper divisors (181255400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127999000 is a wasteful number, since it uses less digits than its factorization.

127999000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181 (or 4167 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 127999000 is about 11313.6643047246. The cubic root of 127999000 is about 503.9671075368.

The spelling of 127999000 in words is "one hundred twenty-seven million, nine hundred ninety-nine thousand".