42443042 has 4 divisors (see below), whose sum is σ = 63664566. Its totient is φ = 21221520.

The previous prime is 42443039. The next prime is 42443069. The reversal of 42443042 is 24034424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36735721 + 5707321 = 6061^2 + 2389^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42442999 and 42443017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610759 + ... + 10610762.

Almost surely, 2^42443042 is an apocalyptic number.

42443042 is a deficient number, since it is larger than the sum of its proper divisors (21221524).

42443042 is a wasteful number, since it uses less digits than its factorization.

42443042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221523.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 42443042 is about 6514.8324613915. The cubic root of 42443042 is about 348.8206345370.

Adding to 42443042 its reverse (24034424), we get a palindrome (66477466).

The spelling of 42443042 in words is "forty-two million, four hundred forty-three thousand, forty-two".