42005304 has 160 divisors (see below), whose sum is σ = 131725440. Its totient is φ = 12398400.

The previous prime is 42005303. The next prime is 42005339. The reversal of 42005304 is 40350024.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42005303) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 506047 + ... + 506129.

It is an arithmetic number, because the mean of its divisors is an integer number (823284).

Almost surely, 2^42005304 is an apocalyptic number.

42005304 is a gapful number since it is divisible by the number (44) 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 42005304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65862720).

42005304 is an abundant number, since it is smaller than the sum of its proper divisors (89720136).

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

42005304 is a wasteful number, since it uses less digits than its factorization.

42005304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 42005304 is about 6481.1498979734. The cubic root of 42005304 is about 347.6172962897.

Adding to 42005304 its reverse (40350024), we get a palindrome (82355328).

The spelling of 42005304 in words is "forty-two million, five thousand, three hundred four".