42442143 has 8 divisors (see below), whose sum is σ = 59568000. Its totient is φ = 26805528.

The previous prime is 42442129. The next prime is 42442157. The reversal of 42442143 is 34124424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42442129) and next prime (42442157).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42442143 - 2¹² = 42438047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372243 + ... + 372356.

It is an arithmetic number, because the mean of its divisors is an integer number (7446000).

Almost surely, 2^42442143 is an apocalyptic number.

42442143 is a deficient number, since it is larger than the sum of its proper divisors (17125857).

42442143 is a wasteful number, since it uses less digits than its factorization.

42442143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744621.

The product of its digits is 3072, while the sum is 24.

The square root of 42442143 is about 6514.7634646240. The cubic root of 42442143 is about 348.8181716915.

Adding to 42442143 its reverse (34124424), we get a palindrome (76566567).

The spelling of 42442143 in words is "forty-two million, four hundred forty-two thousand, one hundred forty-three".