42008530 has 32 divisors (see below), whose sum is σ = 82833840. Its totient is φ = 15267840.

The previous prime is 42008497. The next prime is 42008537. The reversal of 42008530 is 3580024.

It can be written as a sum of positive squares in 8 ways, for example, as 24393721 + 17614809 = 4939^2 + 4197^2 .

It is not an unprimeable number, because it can be changed into a prime (42008537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670 + ... + 9190.

Almost surely, 2^42008530 is an apocalyptic number.

42008530 is a deficient number, since it is larger than the sum of its proper divisors (40825310).

42008530 is a wasteful number, since it uses less digits than its factorization.

42008530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8574.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 42008530 is about 6481.3987687844. The cubic root of 42008530 is about 347.6261950444.

Adding to 42008530 its reverse (3580024), we get a palindrome (45588554).

The spelling of 42008530 in words is "forty-two million, eight thousand, five hundred thirty".