42555240 has 256 divisors, whose sum is σ = 174988800. Its totient is φ = 8957952.

The previous prime is 42555229. The next prime is 42555283. The reversal of 42555240 is 4255524.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98064 + ... + 98496.

It is an arithmetic number, because the mean of its divisors is an integer number (683550).

Almost surely, 2^42555240 is an apocalyptic number.

42555240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42555240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87494400).

42555240 is an abundant number, since it is smaller than the sum of its proper divisors (132433560).

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

42555240 is a wasteful number, since it uses less digits than its factorization.

42555240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 42555240 is about 6523.4377440120. The cubic root of 42555240 is about 349.1277327100.

The spelling of 42555240 in words is "forty-two million, five hundred fifty-five thousand, two hundred forty".