42553540 has 48 divisors (see below), whose sum is σ = 94993920. Its totient is φ = 15966720.

The previous prime is 42553517. The next prime is 42553543. The reversal of 42553540 is 4535524.

It is a junction number, because it is equal to n+sod(n) for n = 42553499 and 42553508.

It is not an unprimeable number, because it can be changed into a prime (42553543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42445 + ... + 43435.

It is an arithmetic number, because the mean of its divisors is an integer number (1979040).

Almost surely, 2^42553540 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 42553540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47496960).

42553540 is an abundant number, since it is smaller than the sum of its proper divisors (52440380).

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

42553540 is a wasteful number, since it uses less digits than its factorization.

42553540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 42553540 is about 6523.3074433143. The cubic root of 42553540 is about 349.1230836543.

The spelling of 42553540 in words is "forty-two million, five hundred fifty-three thousand, five hundred forty".