342021203 has 4 divisors (see below), whose sum is σ = 344199840. Its totient is φ = 339842568.

The previous prime is 342021187. The next prime is 342021259. The reversal of 342021203 is 302120243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302120243 = 17 ⋅17771779.

It is a cyclic number.

It is not a de Polignac number, because 342021203 - 2⁴ = 342021187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342021103) 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 3 ways as a sum of consecutive naturals, for example, 1089083 + ... + 1089396.

It is an arithmetic number, because the mean of its divisors is an integer number (86049960).

Almost surely, 2^342021203 is an apocalyptic number.

342021203 is a deficient number, since it is larger than the sum of its proper divisors (2178637).

342021203 is a wasteful number, since it uses less digits than its factorization.

342021203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178636.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 342021203 is about 18493.8152634874. The cubic root of 342021203 is about 699.3335173319. Note that the first 3 decimals are identical.

Adding to 342021203 its reverse (302120243), we get a palindrome (644141446).

The spelling of 342021203 in words is "three hundred forty-two million, twenty-one thousand, two hundred three".