342421340 has 48 divisors (see below), whose sum is σ = 750617280. Its totient is φ = 131089920.

The previous prime is 342421333. The next prime is 342421379. The reversal of 342421340 is 43124243.

It is a congruent number.

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, 39521 + ... + 47399.

It is an arithmetic number, because the mean of its divisors is an integer number (15637860).

Almost surely, 2^342421340 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 342421340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375308640).

342421340 is an abundant number, since it is smaller than the sum of its proper divisors (408195940).

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

342421340 is a wasteful number, since it uses less digits than its factorization.

342421340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7982 (or 7980 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 342421340 is about 18504.6302313772. The cubic root of 342421340 is about 699.6061321661.

Adding to 342421340 its reverse (43124243), we get a palindrome (385545583).

The spelling of 342421340 in words is "three hundred forty-two million, four hundred twenty-one thousand, three hundred forty".