42512145 has 32 divisors (see below), whose sum is σ = 73592064. Its totient is φ = 20832000.

The previous prime is 42512137. The next prime is 42512153. The reversal of 42512145 is 54121524.

It is an interprime number because it is at equal distance from previous prime (42512137) and next prime (42512153).

It is not a de Polignac number, because 42512145 - 2³ = 42512137 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 60295 + ... + 60995.

It is an arithmetic number, because the mean of its divisors is an integer number (2299752).

Almost surely, 2^42512145 is an apocalyptic number.

It is an amenable number.

42512145 is a deficient number, since it is larger than the sum of its proper divisors (31079919).

42512145 is a wasteful number, since it uses less digits than its factorization.

42512145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its digits is 1600, while the sum is 24.

The square root of 42512145 is about 6520.1338176452. The cubic root of 42512145 is about 349.0098409116.

Adding to 42512145 its reverse (54121524), we get a palindrome (96633669).

The spelling of 42512145 in words is "forty-two million, five hundred twelve thousand, one hundred forty-five".