42433540 has 24 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 16915680.

The previous prime is 42433537. The next prime is 42433553. The reversal of 42433540 is 4533424.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2685 + ... + 9595.

It is an arithmetic number, because the mean of its divisors is an integer number (3725568).

Almost surely, 2^42433540 is an apocalyptic number.

It is an amenable number.

42433540 is an abundant number, since it is smaller than the sum of its proper divisors (46980092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42433540 is a wasteful number, since it uses less digits than its factorization.

42433540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227 (or 7225 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 42433540 is about 6514.1031616025. The cubic root of 42433540 is about 348.7946016791.

Adding to 42433540 its reverse (4533424), we get a palindrome (46966964).

The spelling of 42433540 in words is "forty-two million, four hundred thirty-three thousand, five hundred forty".