342120205252 has 48 divisors (see below), whose sum is σ = 727738905600. Its totient is φ = 137379197952.

The previous prime is 342120205157. The next prime is 342120205309. The reversal of 342120205252 is 252502021243.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 342120205252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1505377 + ... + 1717672.

It is an arithmetic number, because the mean of its divisors is an integer number (15161227200).

Almost surely, 2^342120205252 is an apocalyptic number.

It is an amenable number.

342120205252 is an abundant number, since it is smaller than the sum of its proper divisors (385618700348).

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

342120205252 is a wasteful number, since it uses less digits than its factorization.

342120205252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223300 (or 3223298 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 342120205252 its reverse (252502021243), we get a palindrome (594622226495).

The spelling of 342120205252 in words is "three hundred forty-two billion, one hundred twenty million, two hundred five thousand, two hundred fifty-two".