342021242 has 16 divisors (see below), whose sum is σ = 541341600. Its totient is φ = 161617680.

The previous prime is 342021187. The next prime is 342021259. The reversal of 342021242 is 242120243.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5309 + ... + 26687.

It is an arithmetic number, because the mean of its divisors is an integer number (33833850).

Almost surely, 2^342021242 is an apocalyptic number.

342021242 is a deficient number, since it is larger than the sum of its proper divisors (199320358).

342021242 is a wasteful number, since it uses less digits than its factorization.

342021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21821.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 342021242 is about 18493.8163178939. The cubic root of 342021242 is about 699.3335439131. Note that the first 3 decimals are identical.

Adding to 342021242 its reverse (242120243), we get a palindrome (584141485).

Subtracting from 342021242 its reverse (242120243), we obtain a palindrome (99900999).

The spelling of 342021242 in words is "three hundred forty-two million, twenty-one thousand, two hundred forty-two".