42445105531145 has 8 divisors (see below), whose sum is σ = 51428632721856. Its totient is φ = 33626413701936.

The previous prime is 42445105531123. The next prime is 42445105531187. The reversal of 42445105531145 is 54113550154424.

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 42445105531145 - 2¹⁸ = 42445105269001 is a prime.

It is a super-2 number, since 2×42445105531145² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42445105531096 and 42445105531105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41208839807 + ... + 41208840836.

It is an arithmetic number, because the mean of its divisors is an integer number (6428579090232).

Almost surely, 2^{42445105531145} is an apocalyptic number.

It is an amenable number.

42445105531145 is a deficient number, since it is larger than the sum of its proper divisors (8983527190711).

42445105531145 is a wasteful number, since it uses less digits than its factorization.

42445105531145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82417680751.

The product of its (nonzero) digits is 960000, while the sum is 44.

Adding to 42445105531145 its reverse (54113550154424), we get a palindrome (96558655685569).

The spelling of 42445105531145 in words is "forty-two trillion, four hundred forty-five billion, one hundred five million, five hundred thirty-one thousand, one hundred forty-five".