121928107 has 8 divisors (see below), whose sum is σ = 139416032. Its totient is φ = 104457600.

The previous prime is 121928101. The next prime is 121928123. The reversal of 121928107 is 701829121.

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 121928107 - 2³ = 121928099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121928101) 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, 19057 + ... + 24637.

It is an arithmetic number, because the mean of its divisors is an integer number (17427004).

Almost surely, 2^121928107 is an apocalyptic number.

121928107 is a deficient number, since it is larger than the sum of its proper divisors (17487925).

121928107 is an equidigital number, since it uses as much as digits as its factorization.

121928107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8709.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 121928107 is about 11042.1060944007. The cubic root of 121928107 is about 495.8701248473.

The spelling of 121928107 in words is "one hundred twenty-one million, nine hundred twenty-eight thousand, one hundred seven".