121841915 has 8 divisors (see below), whose sum is σ = 157457328. Its totient is φ = 89975520.

The previous prime is 121841897. The next prime is 121841947. The reversal of 121841915 is 519148121.

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

It is not a de Polignac number, because 121841915 - 2¹⁰ = 121840891 is a prime.

It is a Duffinian number.

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, 937181 + ... + 937310.

It is an arithmetic number, because the mean of its divisors is an integer number (19682166).

Almost surely, 2^121841915 is an apocalyptic number.

121841915 is a deficient number, since it is larger than the sum of its proper divisors (35615413).

121841915 is a wasteful number, since it uses less digits than its factorization.

121841915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874509.

The product of its digits is 2880, while the sum is 32.

The square root of 121841915 is about 11038.2025257738. The cubic root of 121841915 is about 495.7532523888.

The spelling of 121841915 in words is "one hundred twenty-one million, eight hundred forty-one thousand, nine hundred fifteen".