342123320 has 128 divisors (see below), whose sum is σ = 969200640. Its totient is φ = 105584640.

The previous prime is 342123289. The next prime is 342123323. The reversal of 342123320 is 23321243.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 342123292 and 342123301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342123323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347549 + ... + 348531.

It is an arithmetic number, because the mean of its divisors is an integer number (7571880).

Almost surely, 2^342123320 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 342123320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484600320).

342123320 is an abundant number, since it is smaller than the sum of its proper divisors (627077320).

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

342123320 is a wasteful number, since it uses less digits than its factorization.

342123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 342123320 is about 18496.5758993388. The cubic root of 342123320 is about 699.4031102246.

Adding to 342123320 its reverse (23321243), we get a palindrome (365444563).

The spelling of 342123320 in words is "three hundred forty-two million, one hundred twenty-three thousand, three hundred twenty".