42530520040 has 64 divisors (see below), whose sum is σ = 97316606160. Its totient is φ = 16723998720.

The previous prime is 42530520031. The next prime is 42530520047. The reversal of 42530520040 is 4002503524.

42530520040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3006756 + 42527513284 = 1734^2 + 206222^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42530519987 and 42530520014.

It is not an unprimeable number, because it can be changed into a prime (42530520047) 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, 5796214 + ... + 5803546.

Almost surely, 2^42530520040 is an apocalyptic number.

42530520040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42530520040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48658303080).

42530520040 is an abundant number, since it is smaller than the sum of its proper divisors (54786086120).

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

42530520040 is a wasteful number, since it uses less digits than its factorization.

42530520040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782 (or 9778 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The spelling of 42530520040 in words is "forty-two billion, five hundred thirty million, five hundred twenty thousand, forty".