42253530 has 128 divisors (see below), whose sum is σ = 121927680. Its totient is φ = 9250560.

The previous prime is 42253529. The next prime is 42253537. The reversal of 42253530 is 3535224.

42253530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42253530.

It is not an unprimeable number, because it can be changed into a prime (42253537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144064 + ... + 144356.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^42253530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42253530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60963840).

42253530 is an abundant number, since it is smaller than the sum of its proper divisors (79674150).

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

42253530 is a wasteful number, since it uses less digits than its factorization.

42253530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 42253530 is about 6500.2715327900. The cubic root of 42253530 is about 348.3006880624.

Adding to 42253530 its reverse (3535224), we get a palindrome (45788754).

The spelling of 42253530 in words is "forty-two million, two hundred fifty-three thousand, five hundred thirty".