6420342330 has 24 divisors (see below), whose sum is σ = 16692890292. Its totient is φ = 1712091264.

The previous prime is 6420342317. The next prime is 6420342353. The reversal of 6420342330 is 332430246.

It is a happy number.

6420342330 is a `hidden beast` number, since 6 + 4 + 203 + 423 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6390563481 + 29778849 = 79941^2 + 5457^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6420342294 and 6420342303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35668479 + ... + 35668658.

Almost surely, 2^6420342330 is an apocalyptic number.

6420342330 is an abundant number, since it is smaller than the sum of its proper divisors (10272547962).

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

6420342330 is a wasteful number, since it uses less digits than its factorization.

6420342330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71337150 (or 71337147 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 6420342330 is about 80127.0386948126. The cubic root of 6420342330 is about 1858.6005515625.

Adding to 6420342330 its reverse (332430246), we get a palindrome (6752772576).

The spelling of 6420342330 in words is "six billion, four hundred twenty million, three hundred forty-two thousand, three hundred thirty".