42555500 has 48 divisors (see below), whose sum is σ = 100105824. Its totient is φ = 15710400.

The previous prime is 42555493. The next prime is 42555517. The reversal of 42555500 is 555524.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 42555500.

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 15 ways as a sum of consecutive naturals, for example, 3227 + ... + 9773.

It is an arithmetic number, because the mean of its divisors is an integer number (2085538).

Almost surely, 2^42555500 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 42555500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50052912).

42555500 is an abundant number, since it is smaller than the sum of its proper divisors (57550324).

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

42555500 is a wasteful number, since it uses less digits than its factorization.

42555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6579 (or 6567 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 42555500 is about 6523.4576721245. The cubic root of 42555500 is about 349.1284437311.

The spelling of 42555500 in words is "forty-two million, five hundred fifty-five thousand, five hundred".