127873921 has 8 divisors (see below), whose sum is σ = 146390400. Its totient is φ = 109419648.

The previous prime is 127873919. The next prime is 127873931. The reversal of 127873921 is 129378721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 127873921 - 2¹ = 127873919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127873931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11056 + ... + 19441.

It is an arithmetic number, because the mean of its divisors is an integer number (18298800).

Almost surely, 2^127873921 is an apocalyptic number.

It is an amenable number.

127873921 is a deficient number, since it is larger than the sum of its proper divisors (18516479).

127873921 is an equidigital number, since it uses as much as digits as its factorization.

127873921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31103.

The product of its digits is 42336, while the sum is 40.

The square root of 127873921 is about 11308.1351689834. The cubic root of 127873921 is about 503.8028972811.

The spelling of 127873921 in words is "one hundred twenty-seven million, eight hundred seventy-three thousand, nine hundred twenty-one".