42624340 has 48 divisors (see below), whose sum is σ = 98118720. Its totient is φ = 15425280.

The previous prime is 42624331. The next prime is 42624343. The reversal of 42624340 is 4342624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42624343) 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 15 ways as a sum of consecutive naturals, for example, 68551 + ... + 69169.

It is an arithmetic number, because the mean of its divisors is an integer number (2044140).

Almost surely, 2^42624340 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 42624340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49059360).

42624340 is an abundant number, since it is smaller than the sum of its proper divisors (55494380).

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

42624340 is a wasteful number, since it uses less digits than its factorization.

42624340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 42624340 is about 6528.7318829923. The cubic root of 42624340 is about 349.3165984479.

Adding to 42624340 its reverse (4342624), we get a palindrome (46966964).

The spelling of 42624340 in words is "forty-two million, six hundred twenty-four thousand, three hundred forty".