42320330 has 16 divisors (see below), whose sum is σ = 82036584. Its totient is φ = 15625920.

The previous prime is 42320329. The next prime is 42320347. The reversal of 42320330 is 3302324.

It can be written as a sum of positive squares in 4 ways, for example, as 18826921 + 23493409 = 4339^2 + 4847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42320299 and 42320308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162641 + ... + 162900.

Almost surely, 2^42320330 is an apocalyptic number.

42320330 is a deficient number, since it is larger than the sum of its proper divisors (39716254).

42320330 is a wasteful number, since it uses less digits than its factorization.

42320330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325561.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 42320330 is about 6505.4077504796. The cubic root of 42320330 is about 348.4841381063.

Adding to 42320330 its reverse (3302324), we get a palindrome (45622654).

The spelling of 42320330 in words is "forty-two million, three hundred twenty thousand, three hundred thirty".