121417 has 4 divisors (see below), whose sum is σ = 126720. Its totient is φ = 116116.

The previous prime is 121403. The next prime is 121421. The reversal of 121417 is 714121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 714121 = 127 ⋅5623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121417 is a prime.

It is a Duffinian number.

121417 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 121417.

It is not an unprimeable number, because it can be changed into a prime (121447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617 + ... + 2662.

It is an arithmetic number, because the mean of its divisors is an integer number (31680).

2¹²¹⁴¹⁷ is an apocalyptic number.

It is an amenable number.

121417 is a deficient number, since it is larger than the sum of its proper divisors (5303).

121417 is an equidigital number, since it uses as much as digits as its factorization.

121417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302.

The product of its digits is 56, while the sum is 16.

The square root of 121417 is about 348.4494224418. The cubic root of 121417 is about 49.5176279766.

Adding to 121417 its reverse (714121), we get a palindrome (835538).

Subtracting 121417 from its reverse (714121), we obtain a cube (592704 = 84³).

The spelling of 121417 in words is "one hundred twenty-one thousand, four hundred seventeen", and thus it is an iban number.