42085851 has 4 divisors (see below), whose sum is σ = 56114472. Its totient is φ = 28057232.

The previous prime is 42085847. The next prime is 42085853. The reversal of 42085851 is 15858024.

42085851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42085851 - 2² = 42085847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42085853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7014306 + ... + 7014311.

It is an arithmetic number, because the mean of its divisors is an integer number (14028618).

Almost surely, 2^42085851 is an apocalyptic number.

42085851 is a deficient number, since it is larger than the sum of its proper divisors (14028621).

42085851 is a wasteful number, since it uses less digits than its factorization.

42085851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14028620.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 42085851 is about 6487.3608655600. The cubic root of 42085851 is about 347.8393448563.

The spelling of 42085851 in words is "forty-two million, eighty-five thousand, eight hundred fifty-one".