42309324 has 24 divisors (see below), whose sum is σ = 109691120. Its totient is φ = 14103072.

The previous prime is 42309307. The next prime is 42309329. The reversal of 42309324 is 42390324.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42309329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195769 + ... + 195984.

Almost surely, 2^42309324 is an apocalyptic number.

It is an amenable number.

42309324 is an abundant number, since it is smaller than the sum of its proper divisors (67381796).

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

42309324 is a wasteful number, since it uses less digits than its factorization.

42309324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391766 (or 391758 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 42309324 is about 6504.5617838560. The cubic root of 42309324 is about 348.4539260785.

Adding to 42309324 its reverse (42390324), we get a palindrome (84699648).

The spelling of 42309324 in words is "forty-two million, three hundred nine thousand, three hundred twenty-four".