42642330 has 32 divisors (see below), whose sum is σ = 102513600. Its totient is φ = 11352192.

The previous prime is 42642269. The next prime is 42642331. The reversal of 42642330 is 3324624.

It is a happy number.

42642330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42642330.

It is not an unprimeable number, because it can be changed into a prime (42642331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33241 + ... + 34499.

It is an arithmetic number, because the mean of its divisors is an integer number (3203550).

Almost surely, 2^42642330 is an apocalyptic number.

42642330 is an abundant number, since it is smaller than the sum of its proper divisors (59871270).

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

42642330 is a wasteful number, since it uses less digits than its factorization.

42642330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 42642330 is about 6530.1094937221. The cubic root of 42642330 is about 349.3657356444.

Adding to 42642330 its reverse (3324624), we get a palindrome (45966954).

The spelling of 42642330 in words is "forty-two million, six hundred forty-two thousand, three hundred thirty".