42031443 has 16 divisors (see below), whose sum is σ = 58090496. Its totient is φ = 27004320.

The previous prime is 42031441. The next prime is 42031447. The reversal of 42031443 is 34413024.

It is not a de Polignac number, because 42031443 - 2¹ = 42031441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42031441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25521 + ... + 27117.

It is an arithmetic number, because the mean of its divisors is an integer number (3630656).

Almost surely, 2^42031443 is an apocalyptic number.

42031443 is a deficient number, since it is larger than the sum of its proper divisors (16059053).

42031443 is a wasteful number, since it uses less digits than its factorization.

42031443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 42031443 is about 6483.1661246647. The cubic root of 42031443 is about 347.6893862683.

Adding to 42031443 its reverse (34413024), we get a palindrome (76444467).

The spelling of 42031443 in words is "forty-two million, thirty-one thousand, four hundred forty-three".