42635340 has 144 divisors (see below), whose sum is σ = 143803296. Its totient is φ = 10137600.

The previous prime is 42635339. The next prime is 42635381. The reversal of 42635340 is 4353624.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120604 + ... + 120956.

It is an arithmetic number, because the mean of its divisors is an integer number (998634).

Almost surely, 2^42635340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42635340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71901648).

42635340 is an abundant number, since it is smaller than the sum of its proper divisors (101167956).

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

42635340 is a wasteful number, since it uses less digits than its factorization.

42635340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 42635340 is about 6529.5742587094. The cubic root of 42635340 is about 349.3466450683.

Adding to 42635340 its reverse (4353624), we get a palindrome (46988964).

The spelling of 42635340 in words is "forty-two million, six hundred thirty-five thousand, three hundred forty".