16702121 has 8 divisors (see below), whose sum is σ = 17692320. Its totient is φ = 15723072.

The previous prime is 16702099. The next prime is 16702123. The reversal of 16702121 is 12120761.

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-16702121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16702093 and 16702102.

It is not an unprimeable number, because it can be changed into a prime (16702123) 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, 401 + ... + 5793.

It is an arithmetic number, because the mean of its divisors is an integer number (2211540).

Almost surely, 2^16702121 is an apocalyptic number.

It is an amenable number.

16702121 is a deficient number, since it is larger than the sum of its proper divisors (990199).

16702121 is a wasteful number, since it uses less digits than its factorization.

16702121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 16702121 is about 4086.8228491091. The cubic root of 16702121 is about 255.6174757820.

Adding to 16702121 its reverse (12120761), we get a palindrome (28822882).

The spelling of 16702121 in words is "sixteen million, seven hundred two thousand, one hundred twenty-one".