121128395 has 8 divisors (see below), whose sum is σ = 145761120. Its totient is φ = 96631360.

The previous prime is 121128379. The next prime is 121128433. The reversal of 121128395 is 593821121.

It is a happy number.

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

It is not a de Polignac number, because 121128395 - 2⁴ = 121128379 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31946 + ... + 35535.

It is an arithmetic number, because the mean of its divisors is an integer number (18220140).

Almost surely, 2^121128395 is an apocalyptic number.

121128395 is a deficient number, since it is larger than the sum of its proper divisors (24632725).

121128395 is an equidigital number, since it uses as much as digits as its factorization.

121128395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67845.

The product of its digits is 4320, while the sum is 32.

The square root of 121128395 is about 11005.8345889805. The cubic root of 121128395 is about 494.7836281838.

The spelling of 121128395 in words is "one hundred twenty-one million, one hundred twenty-eight thousand, three hundred ninety-five".