42530145 has 16 divisors (see below), whose sum is σ = 77769600. Its totient is φ = 19442304.

The previous prime is 42530119. The next prime is 42530179. The reversal of 42530145 is 54103524.

It is not a de Polignac number, because 42530145 - 2⁷ = 42530017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202420 + ... + 202629.

It is an arithmetic number, because the mean of its divisors is an integer number (4860600).

Almost surely, 2^42530145 is an apocalyptic number.

It is an amenable number.

42530145 is a deficient number, since it is larger than the sum of its proper divisors (35239455).

42530145 is a wasteful number, since it uses less digits than its factorization.

42530145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405064.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42530145 is about 6521.5140113320. The cubic root of 42530145 is about 349.0590918625.

Adding to 42530145 its reverse (54103524), we get a palindrome (96633669).

The spelling of 42530145 in words is "forty-two million, five hundred thirty thousand, one hundred forty-five".