42321143 has 8 divisors (see below), whose sum is σ = 45904320. Its totient is φ = 38859520.

The previous prime is 42321137. The next prime is 42321187. The reversal of 42321143 is 34112324.

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

It is a cyclic number.

It is not a de Polignac number, because 42321143 - 2⁶ = 42321079 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 (42321133) 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, 29663 + ... + 31056.

It is an arithmetic number, because the mean of its divisors is an integer number (5738040).

Almost surely, 2^42321143 is an apocalyptic number.

42321143 is a deficient number, since it is larger than the sum of its proper divisors (3583177).

42321143 is a wasteful number, since it uses less digits than its factorization.

42321143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60777.

The product of its digits is 576, while the sum is 20.

The square root of 42321143 is about 6505.4702366547. The cubic root of 42321143 is about 348.4863696247.

Adding to 42321143 its reverse (34112324), we get a palindrome (76433467).

The spelling of 42321143 in words is "forty-two million, three hundred twenty-one thousand, one hundred forty-three".