121417999 has 8 divisors (see below), whose sum is σ = 129904880. Its totient is φ = 113140800.

The previous prime is 121417993. The next prime is 121418057. The reversal of 121417999 is 999714121.

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 121417999 - 2⁷ = 121417871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121417993) 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, 51222 + ... + 53539.

It is an arithmetic number, because the mean of its divisors is an integer number (16238110).

Almost surely, 2^121417999 is an apocalyptic number.

121417999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121417999 is a deficient number, since it is larger than the sum of its proper divisors (8486881).

121417999 is a wasteful number, since it uses less digits than its factorization.

121417999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104841.

The product of its digits is 40824, while the sum is 43.

The square root of 121417999 is about 11018.9835738148. The cubic root of 121417999 is about 495.1776378396.

The spelling of 121417999 in words is "one hundred twenty-one million, four hundred seventeen thousand, nine hundred ninety-nine".