42443433 has 20 divisors (see below), whose sum is σ = 65452288. Its totient is φ = 27381240.

The previous prime is 42443431. The next prime is 42443437. The reversal of 42443433 is 33434424.

It is not a de Polignac number, because 42443433 - 2¹ = 42443431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42443397 and 42443406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42443431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5941 + ... + 10962.

Almost surely, 2^42443433 is an apocalyptic number.

It is an amenable number.

42443433 is a deficient number, since it is larger than the sum of its proper divisors (23008855).

42443433 is a wasteful number, since it uses less digits than its factorization.

42443433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16946 (or 16937 counting only the distinct ones).

The product of its digits is 13824, while the sum is 27.

The square root of 42443433 is about 6514.8624697686. The cubic root of 42443433 is about 348.8217056859.

Adding to 42443433 its reverse (33434424), we get a palindrome (75877857).

Subtracting from 42443433 its reverse (33434424), we obtain a palindrome (9009009).

The spelling of 42443433 in words is "forty-two million, four hundred forty-three thousand, four hundred thirty-three".