42859851 has 4 divisors (see below), whose sum is σ = 57146472. Its totient is φ = 28573232.

The previous prime is 42859849. The next prime is 42859853. The reversal of 42859851 is 15895824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42859849) and next prime (42859853).

It is a cyclic number.

It is not a de Polignac number, because 42859851 - 2¹ = 42859849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42859853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7143306 + ... + 7143311.

It is an arithmetic number, because the mean of its divisors is an integer number (14286618).

Almost surely, 2^42859851 is an apocalyptic number.

42859851 is a deficient number, since it is larger than the sum of its proper divisors (14286621).

42859851 is a wasteful number, since it uses less digits than its factorization.

42859851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286620.

The product of its digits is 115200, while the sum is 42.

The square root of 42859851 is about 6546.7435416396. The cubic root of 42859851 is about 349.9587733754.

The spelling of 42859851 in words is "forty-two million, eight hundred fifty-nine thousand, eight hundred fifty-one".