121923115 has 8 divisors (see below), whose sum is σ = 152669088. Its totient is φ = 93297600.

The previous prime is 121923107. The next prime is 121923119. The reversal of 121923115 is 511329121.

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

It is not a de Polignac number, because 121923115 - 2³ = 121923107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121923115.

It is not an unprimeable number, because it can be changed into a prime (121923119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529986 + ... + 530215.

It is an arithmetic number, because the mean of its divisors is an integer number (19083636).

Almost surely, 2^121923115 is an apocalyptic number.

121923115 is a deficient number, since it is larger than the sum of its proper divisors (30745973).

121923115 is a wasteful number, since it uses less digits than its factorization.

121923115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060229.

The product of its digits is 540, while the sum is 25.

The square root of 121923115 is about 11041.8800482527. The cubic root of 121923115 is about 495.8633574237.

The spelling of 121923115 in words is "one hundred twenty-one million, nine hundred twenty-three thousand, one hundred fifteen".