42432143 has 4 divisors (see below), whose sum is σ = 45696168. Its totient is φ = 39168120.

The previous prime is 42432127. The next prime is 42432161. The reversal of 42432143 is 34123424.

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 42432143 - 2⁴ = 42432127 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 (42432043) 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, 1631993 + ... + 1632018.

It is an arithmetic number, because the mean of its divisors is an integer number (11424042).

Almost surely, 2^42432143 is an apocalyptic number.

42432143 is a deficient number, since it is larger than the sum of its proper divisors (3264025).

42432143 is a wasteful number, since it uses less digits than its factorization.

42432143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264024.

The product of its digits is 2304, while the sum is 23.

The square root of 42432143 is about 6513.9959318378. The cubic root of 42432143 is about 348.7907739569.

Adding to 42432143 its reverse (34123424), we get a palindrome (76555567).

The spelling of 42432143 in words is "forty-two million, four hundred thirty-two thousand, one hundred forty-three".