127878 has 8 divisors (see below), whose sum is σ = 255768. Its totient is φ = 42624.

The previous prime is 127877. The next prime is 127913. The reversal of 127878 is 878721.

It is a sphenic number, since it is the product of 3 distinct primes.

127878 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10651 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (31971).

2¹²⁷⁸⁷⁸ is an apocalyptic number.

127878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

127878 is a wasteful number, since it uses less digits than its factorization.

127878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21318.

The product of its digits is 6272, while the sum is 33.

The square root of 127878 is about 357.6003355703. The cubic root of 127878 is about 50.3808254094.

The spelling of 127878 in words is "one hundred twenty-seven thousand, eight hundred seventy-eight".