42424530 has 64 divisors (see below), whose sum is σ = 107965440. Its totient is φ = 10639296.

The previous prime is 42424519. The next prime is 42424561. The reversal of 42424530 is 3542424.

It is a self number, because there is not a number n which added to its sum of digits gives 42424530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149769 + ... + 150051.

It is an arithmetic number, because the mean of its divisors is an integer number (1686960).

Almost surely, 2^42424530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42424530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53982720).

42424530 is an abundant number, since it is smaller than the sum of its proper divisors (65540910).

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

42424530 is a wasteful number, since it uses less digits than its factorization.

42424530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 42424530 is about 6513.4115484898. The cubic root of 42424530 is about 348.7699131755.

Adding to 42424530 its reverse (3542424), we get a palindrome (45966954).

The spelling of 42424530 in words is "forty-two million, four hundred twenty-four thousand, five hundred thirty".