42545145 has 8 divisors (see below), whose sum is σ = 68072256. Its totient is φ = 22690736.

The previous prime is 42545143. The next prime is 42545159. The reversal of 42545145 is 54154524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42545145 - 2¹ = 42545143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42545143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418157 + ... + 1418186.

It is an arithmetic number, because the mean of its divisors is an integer number (8509032).

Almost surely, 2^42545145 is an apocalyptic number.

It is an amenable number.

42545145 is a deficient number, since it is larger than the sum of its proper divisors (25527111).

42545145 is a wasteful number, since it uses less digits than its factorization.

42545145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836351.

The product of its digits is 16000, while the sum is 30.

The square root of 42545145 is about 6522.6639496451. The cubic root of 42545145 is about 349.1001237075.

Adding to 42545145 its reverse (54154524), we get a palindrome (96699669).

The spelling of 42545145 in words is "forty-two million, five hundred forty-five thousand, one hundred forty-five".