42859709 has 8 divisors (see below), whose sum is σ = 44614560. Its totient is φ = 41123376.

The previous prime is 42859679. The next prime is 42859753. The reversal of 42859709 is 90795824.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42859709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42859709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42859799) by changing a digit.

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, 194 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (5576820).

Almost surely, 2^42859709 is an apocalyptic number.

It is an amenable number.

42859709 is a deficient number, since it is larger than the sum of its proper divisors (1754851).

42859709 is a wasteful number, since it uses less digits than its factorization.

42859709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 42859709 is about 6546.7326965441. The cubic root of 42859709 is about 349.9583868894.

The spelling of 42859709 in words is "forty-two million, eight hundred fifty-nine thousand, seven hundred nine".