42505130 has 24 divisors (see below), whose sum is σ = 77567652. Its totient is φ = 16769984.

The previous prime is 42505121. The next prime is 42505157. The reversal of 42505130 is 3150524.

It can be written as a sum of positive squares in 2 ways, for example, as 36711481 + 5793649 = 6059^2 + 2407^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 68582 + ... + 69198.

Almost surely, 2^42505130 is an apocalyptic number.

42505130 is a deficient number, since it is larger than the sum of its proper divisors (35062522).

42505130 is an equidigital number, since it uses as much as digits as its factorization.

42505130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42505130 is about 6519.5958463696. The cubic root of 42505130 is about 348.9906429568.

Adding to 42505130 its reverse (3150524), we get a palindrome (45655654).

The spelling of 42505130 in words is "forty-two million, five hundred five thousand, one hundred thirty".