42555344 has 40 divisors (see below), whose sum is σ = 89655720. Its totient is φ = 19450368.

The previous prime is 42555329. The next prime is 42555347. The reversal of 42555344 is 44355524.

It can be written as a sum of positive squares in 4 ways, for example, as 5345344 + 37210000 = 2312^2 + 6100^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42555344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21734 + ... + 23610.

It is an arithmetic number, because the mean of its divisors is an integer number (2241393).

Almost surely, 2^42555344 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 42555344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44827860).

42555344 is an abundant number, since it is smaller than the sum of its proper divisors (47100376).

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

42555344 is a wasteful number, since it uses less digits than its factorization.

42555344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007 (or 2001 counting only the distinct ones).

The product of its digits is 48000, while the sum is 32.

The square root of 42555344 is about 6523.4457152643. The cubic root of 42555344 is about 349.1280171188.

The spelling of 42555344 in words is "forty-two million, five hundred fifty-five thousand, three hundred forty-four".