42423143 has 32 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 31256064.

The previous prime is 42423133. The next prime is 42423149. The reversal of 42423143 is 34132424.

It is not a de Polignac number, because 42423143 - 2¹⁰ = 42422119 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 (42423149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65246 + ... + 65892.

It is an arithmetic number, because the mean of its divisors is an integer number (1749600).

Almost surely, 2^42423143 is an apocalyptic number.

42423143 is a deficient number, since it is larger than the sum of its proper divisors (13564057).

42423143 is a wasteful number, since it uses less digits than its factorization.

42423143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719.

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

The square root of 42423143 is about 6513.3050749984. The cubic root of 42423143 is about 348.7661123151.

Adding to 42423143 its reverse (34132424), we get a palindrome (76555567).

The spelling of 42423143 in words is "forty-two million, four hundred twenty-three thousand, one hundred forty-three".