342121220 has 96 divisors (see below), whose sum is σ = 885669120. Its totient is φ = 108380160.

The previous prime is 342121193. The next prime is 342121223. The reversal of 342121220 is 22121243.

It is not an unprimeable number, because it can be changed into a prime (342121223) 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 31 ways as a sum of consecutive naturals, for example, 107492 + ... + 110628.

It is an arithmetic number, because the mean of its divisors is an integer number (9225720).

Almost surely, 2^342121220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 342121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442834560).

342121220 is an abundant number, since it is smaller than the sum of its proper divisors (543547900).

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

342121220 is a wasteful number, since it uses less digits than its factorization.

342121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3211 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 342121220 is about 18496.5191319881. The cubic root of 342121220 is about 699.4016792108.

Adding to 342121220 its reverse (22121243), we get a palindrome (364242463).

The spelling of 342121220 in words is "three hundred forty-two million, one hundred twenty-one thousand, two hundred twenty".