42312330 has 48 divisors (see below), whose sum is σ = 110546280. Its totient is φ = 11228544.

The previous prime is 42312323. The next prime is 42312353. The reversal of 42312330 is 3321324.

It can be written as a sum of positive squares in 4 ways, for example, as 40717161 + 1595169 = 6381^2 + 1263^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19584 + ... + 21636.

Almost surely, 2^42312330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42312330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55273140).

42312330 is an abundant number, since it is smaller than the sum of its proper divisors (68233950).

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

42312330 is a wasteful number, since it uses less digits than its factorization.

42312330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295 (or 2292 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 42312330 is about 6504.7928483542. The cubic root of 42312330 is about 348.4621782209.

Adding to 42312330 its reverse (3321324), we get a palindrome (45633654).

It can be divided in two parts, 4231 and 2330, that added together give a 8-th power (6561 = 3⁸).

The spelling of 42312330 in words is "forty-two million, three hundred twelve thousand, three hundred thirty".