42533540 has 48 divisors (see below), whose sum is σ = 102816000. Its totient is φ = 14477952.

The previous prime is 42533527. The next prime is 42533551. The reversal of 42533540 is 4533524.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19841 + ... + 21879.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^42533540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42533540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51408000).

42533540 is an abundant number, since it is smaller than the sum of its proper divisors (60282460).

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

42533540 is a wasteful number, since it uses less digits than its factorization.

42533540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2202 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 42533540 is about 6521.7742984559. The cubic root of 42533540 is about 349.0683795813.

The spelling of 42533540 in words is "forty-two million, five hundred thirty-three thousand, five hundred forty".