42505056 has 72 divisors (see below), whose sum is σ = 131872104. Its totient is φ = 12879360.

The previous prime is 42505051. The next prime is 42505103. The reversal of 42505056 is 65050524.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42505051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3541 + ... + 9876.

It is an arithmetic number, because the mean of its divisors is an integer number (1831557).

Almost surely, 2^42505056 is an apocalyptic number.

It is an amenable number.

42505056 is an abundant number, since it is smaller than the sum of its proper divisors (89367048).

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

42505056 is a wasteful number, since it uses less digits than its factorization.

42505056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13444 (or 13433 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 42505056 is about 6519.5901711687. The cubic root of 42505056 is about 348.9904404297.

The spelling of 42505056 in words is "forty-two million, five hundred five thousand, fifty-six".