42004323240 has 128 divisors (see below), whose sum is σ = 137619457920. Its totient is φ = 10171699200.

The previous prime is 42004323217. The next prime is 42004323241. The reversal of 42004323240 is 4232340024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42004323240.

It is not an unprimeable number, because it can be changed into a prime (42004323241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1219860 + ... + 1253820.

It is an arithmetic number, because the mean of its divisors is an integer number (1075152015).

Almost surely, 2^42004323240 is an apocalyptic number.

42004323240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42004323240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68809728960).

42004323240 is an abundant number, since it is smaller than the sum of its proper divisors (95615134680).

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

42004323240 is a wasteful number, since it uses less digits than its factorization.

42004323240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34923 (or 34919 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 42004323240 its reverse (4232340024), we get a palindrome (46236663264).

The spelling of 42004323240 in words is "forty-two billion, four million, three hundred twenty-three thousand, two hundred forty".