17242121 has 8 divisors (see below), whose sum is σ = 18629184. Its totient is φ = 15863760.

The previous prime is 17242117. The next prime is 17242129. The reversal of 17242121 is 12124271.

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 17242121 - 2² = 17242117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 17242093 and 17242102.

It is not an unprimeable number, because it can be changed into a prime (17242129) 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, 2300 + ... + 6306.

It is an arithmetic number, because the mean of its divisors is an integer number (2328648).

Almost surely, 2^17242121 is an apocalyptic number.

It is an amenable number.

17242121 is a deficient number, since it is larger than the sum of its proper divisors (1387063).

17242121 is a wasteful number, since it uses less digits than its factorization.

17242121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351.

The product of its digits is 224, while the sum is 20.

The square root of 17242121 is about 4152.3633029878. The cubic root of 17242121 is about 258.3431175853.

Adding to 17242121 its reverse (12124271), we get a palindrome (29366392).

The spelling of 17242121 in words is "seventeen million, two hundred forty-two thousand, one hundred twenty-one".