42091143 has 16 divisors (see below), whose sum is σ = 57712896. Its totient is φ = 27276480.

The previous prime is 42091141. The next prime is 42091157. The reversal of 42091143 is 34119024.

It is not a de Polignac number, because 42091143 - 2¹ = 42091141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42091141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14196 + ... + 16902.

It is an arithmetic number, because the mean of its divisors is an integer number (3607056).

Almost surely, 2^42091143 is an apocalyptic number.

42091143 is a deficient number, since it is larger than the sum of its proper divisors (15621753).

42091143 is a wasteful number, since it uses less digits than its factorization.

42091143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 42091143 is about 6487.7687227582. The cubic root of 42091143 is about 347.8539236963.

The spelling of 42091143 in words is "forty-two million, ninety-one thousand, one hundred forty-three".