42856143 has 12 divisors (see below), whose sum is σ = 62808984. Its totient is φ = 25973200.

The previous prime is 42856141. The next prime is 42856147. The reversal of 42856143 is 34165824.

It is not a de Polignac number, because 42856143 - 2¹ = 42856141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42856141) 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 11 ways as a sum of consecutive naturals, for example, 58668 + ... + 59393.

It is an arithmetic number, because the mean of its divisors is an integer number (5234082).

Almost surely, 2^42856143 is an apocalyptic number.

42856143 is a deficient number, since it is larger than the sum of its proper divisors (19952841).

42856143 is a wasteful number, since it uses less digits than its factorization.

42856143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118086 (or 118075 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 42856143 is about 6546.4603412837. The cubic root of 42856143 is about 349.9486809110.

The spelling of 42856143 in words is "forty-two million, eight hundred fifty-six thousand, one hundred forty-three".