42855480 has 96 divisors (see below), whose sum is σ = 144471600. Its totient is φ = 11425536.

The previous prime is 42855467. The next prime is 42855481. The reversal of 42855480 is 8455824.

42855480 is a `hidden beast` number, since 4 + 28 + 554 + 80 = 666.

42855480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42855481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7516 + ... + 11924.

Almost surely, 2^42855480 is an apocalyptic number.

42855480 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 42855480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72235800).

42855480 is an abundant number, since it is smaller than the sum of its proper divisors (101616120).

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

42855480 is a wasteful number, since it uses less digits than its factorization.

42855480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435 (or 4419 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 42855480 is about 6546.4097030357. The cubic root of 42855480 is about 349.9468762909.

The spelling of 42855480 in words is "forty-two million, eight hundred fifty-five thousand, four hundred eighty".