42404530 has 16 divisors (see below), whose sum is σ = 87232320. Its totient is φ = 14538672.

The previous prime is 42404513. The next prime is 42404533. The reversal of 42404530 is 3540424.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42404533) 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 7 ways as a sum of consecutive naturals, for example, 302820 + ... + 302959.

It is an arithmetic number, because the mean of its divisors is an integer number (5452020).

Almost surely, 2^42404530 is an apocalyptic number.

42404530 is an abundant number, since it is smaller than the sum of its proper divisors (44827790).

42404530 is a wasteful number, since it uses less digits than its factorization.

42404530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605793.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42404530 is about 6511.8760737594. The cubic root of 42404530 is about 348.7150982317.

Adding to 42404530 its reverse (3540424), we get a palindrome (45944954).

The spelling of 42404530 in words is "forty-two million, four hundred four thousand, five hundred thirty".