42641143 has 4 divisors (see below), whose sum is σ = 42712000. Its totient is φ = 42570288.

The previous prime is 42641141. The next prime is 42641147. The reversal of 42641143 is 34114624.

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 42641143 - 2¹ = 42641141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42641141) 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, 34518 + ... + 35731.

It is an arithmetic number, because the mean of its divisors is an integer number (10678000).

Almost surely, 2^42641143 is an apocalyptic number.

42641143 is a deficient number, since it is larger than the sum of its proper divisors (70857).

42641143 is an equidigital number, since it uses as much as digits as its factorization.

42641143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70856.

The product of its digits is 2304, while the sum is 25.

The square root of 42641143 is about 6530.0186064053. The cubic root of 42641143 is about 349.3624939440.

Adding to 42641143 its reverse (34114624), we get a palindrome (76755767).

The spelling of 42641143 in words is "forty-two million, six hundred forty-one thousand, one hundred forty-three".