342021144 has 32 divisors (see below), whose sum is σ = 869073840. Its totient is φ = 112137600.

The previous prime is 342021103. The next prime is 342021149. The reversal of 342021144 is 441120243.

It is a self number, because there is not a number n which added to its sum of digits gives 342021144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342021149) 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, 115347 + ... + 118274.

Almost surely, 2^342021144 is an apocalyptic number.

It is an amenable number.

342021144 is an abundant number, since it is smaller than the sum of its proper divisors (527052696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

342021144 is a wasteful number, since it uses less digits than its factorization.

342021144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233691 (or 233687 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 342021144 is about 18493.8136683595. The cubic root of 342021144 is about 699.3334771193. Note that the first 3 decimals are identical.

Adding to 342021144 its reverse (441120243), we get a palindrome (783141387).

Subtracting 342021144 from its reverse (441120243), we obtain a palindrome (99099099).

The spelling of 342021144 in words is "three hundred forty-two million, twenty-one thousand, one hundred forty-four".