42617145 has 16 divisors (see below), whose sum is σ = 68346432. Its totient is φ = 22676160.

The previous prime is 42617119. The next prime is 42617149. The reversal of 42617145 is 54171624.

It is not a de Polignac number, because 42617145 - 2⁷ = 42617017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42617149) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3834 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (4271652).

Almost surely, 2^42617145 is an apocalyptic number.

It is an amenable number.

42617145 is a deficient number, since it is larger than the sum of its proper divisors (25729287).

42617145 is a wasteful number, since it uses less digits than its factorization.

42617145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632.

The product of its digits is 6720, while the sum is 30.

The square root of 42617145 is about 6528.1808338924. The cubic root of 42617145 is about 349.2969424301.

Adding to 42617145 its reverse (54171624), we get a palindrome (96788769).

It can be divided in two parts, 426 and 17145, that added together give a palindrome (17571).

The spelling of 42617145 in words is "forty-two million, six hundred seventeen thousand, one hundred forty-five".