42442533 has 24 divisors (see below), whose sum is σ = 70239936. Its totient is φ = 24192000.

The previous prime is 42442483. The next prime is 42442541. The reversal of 42442533 is 33524424.

It is not a de Polignac number, because 42442533 - 2⁶ = 42442469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42442497 and 42442506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39858 + ... + 40908.

It is an arithmetic number, because the mean of its divisors is an integer number (2926664).

Almost surely, 2^42442533 is an apocalyptic number.

It is an amenable number.

42442533 is a deficient number, since it is larger than the sum of its proper divisors (27797403).

42442533 is a wasteful number, since it uses less digits than its factorization.

42442533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1702 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 42442533 is about 6514.7933965706. The cubic root of 42442533 is about 348.8192401159.

Adding to 42442533 its reverse (33524424), we get a palindrome (75966957).

The spelling of 42442533 in words is "forty-two million, four hundred forty-two thousand, five hundred thirty-three".