120121517 has 8 divisors (see below), whose sum is σ = 121486176. Its totient is φ = 118761552.

The previous prime is 120121511. The next prime is 120121523. The reversal of 120121517 is 715121021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120121511) and next prime (120121523).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120121517 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 (120121511) 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, 80258 + ... + 81740.

It is an arithmetic number, because the mean of its divisors is an integer number (15185772).

Almost surely, 2^120121517 is an apocalyptic number.

It is an amenable number.

120121517 is a deficient number, since it is larger than the sum of its proper divisors (1364659).

120121517 is a wasteful number, since it uses less digits than its factorization.

120121517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 120121517 is about 10959.9962135030. The cubic root of 120121517 is about 493.4088513056.

Adding to 120121517 its reverse (715121021), we get a palindrome (835242538).

The spelling of 120121517 in words is "one hundred twenty million, one hundred twenty-one thousand, five hundred seventeen".