42520456 has 32 divisors (see below), whose sum is σ = 88178400. Its totient is φ = 19059840.

The previous prime is 42520447. The next prime is 42520487. The reversal of 42520456 is 65402524.

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, 3115 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (2755575).

Almost surely, 2^42520456 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 42520456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44089200).

42520456 is an abundant number, since it is smaller than the sum of its proper divisors (45657944).

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

42520456 is a wasteful number, since it uses less digits than its factorization.

42520456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709 (or 6705 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 42520456 is about 6520.7711200440. The cubic root of 42520456 is about 349.0325828973.

The spelling of 42520456 in words is "forty-two million, five hundred twenty thousand, four hundred fifty-six".