42520855 has 8 divisors (see below), whose sum is σ = 54950112. Its totient is φ = 31399968.

The previous prime is 42520847. The next prime is 42520889. The reversal of 42520855 is 55802524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42520855 - 2³ = 42520847 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 327019 + ... + 327148.

It is an arithmetic number, because the mean of its divisors is an integer number (6868764).

Almost surely, 2^42520855 is an apocalyptic number.

42520855 is a deficient number, since it is larger than the sum of its proper divisors (12429257).

42520855 is a wasteful number, since it uses less digits than its factorization.

42520855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654185.

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 42520855 is about 6520.8017145133. The cubic root of 42520855 is about 349.0336746351.

The spelling of 42520855 in words is "forty-two million, five hundred twenty thousand, eight hundred fifty-five".