17970121 has 8 divisors (see below), whose sum is σ = 19764864. Its totient is φ = 16234320.

The previous prime is 17970103. The next prime is 17970131. The reversal of 17970121 is 12107971.

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-17970121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17970121.

It is not an unprimeable number, because it can be changed into a prime (17970131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14095 + ... + 15316.

It is an arithmetic number, because the mean of its divisors is an integer number (2470608).

Almost surely, 2^17970121 is an apocalyptic number.

It is an amenable number.

17970121 is a deficient number, since it is larger than the sum of its proper divisors (1794743).

17970121 is a wasteful number, since it uses less digits than its factorization.

17970121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29471.

The product of its (nonzero) digits is 882, while the sum is 28.

The square root of 17970121 is about 4239.1179507063. The cubic root of 17970121 is about 261.9290496070.

The spelling of 17970121 in words is "seventeen million, nine hundred seventy thousand, one hundred twenty-one".