42945459 has 8 divisors (see below), whose sum is σ = 58115520. Its totient is φ = 28202856.

The previous prime is 42945443. The next prime is 42945467. The reversal of 42945459 is 95454924.

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

It is not a de Polignac number, because 42945459 - 2⁴ = 42945443 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 42945459.

It is not an unprimeable number, because it can be changed into a prime (42945059) 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, 106629 + ... + 107030.

It is an arithmetic number, because the mean of its divisors is an integer number (7264440).

Almost surely, 2^42945459 is an apocalyptic number.

42945459 is a deficient number, since it is larger than the sum of its proper divisors (15170061).

42945459 is a wasteful number, since it uses less digits than its factorization.

42945459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213729.

The product of its digits is 259200, while the sum is 42.

The square root of 42945459 is about 6553.2784924799. The cubic root of 42945459 is about 350.1916202414.

The spelling of 42945459 in words is "forty-two million, nine hundred forty-five thousand, four hundred fifty-nine".