196021 has 8 divisors (see below), whose sum is σ = 229824. Its totient is φ = 163680.

The previous prime is 196003. The next prime is 196033. The reversal of 196021 is 120691.

196021 = T₁₂₆ + T₁₂₇ + ... + T₁₄₆.

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 196021 - 2⁷ = 195893 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 196021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 628.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

It is a Poulet number, since it divides 2¹⁹⁶⁰²⁰-1.

2¹⁹⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

196021 is a deficient number, since it is larger than the sum of its proper divisors (33803).

196021 is an equidigital number, since it uses as much as digits as its factorization.

196021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 196021 is about 442.7425888708. The cubic root of 196021 is about 58.0899318279.

The spelling of 196021 in words is "one hundred ninety-six thousand, twenty-one".