42855456 has 48 divisors (see below), whose sum is σ = 128568384. Its totient is φ = 12244224.

The previous prime is 42855451. The next prime is 42855467. The reversal of 42855456 is 65455824.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (42855451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31215 + ... + 32558.

It is an arithmetic number, because the mean of its divisors is an integer number (2678508).

Almost surely, 2^42855456 is an apocalyptic number.

It is an amenable number.

42855456 is an abundant number, since it is smaller than the sum of its proper divisors (85712928).

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

42855456 is a wasteful number, since it uses less digits than its factorization.

42855456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63793 (or 63785 counting only the distinct ones).

The product of its digits is 192000, while the sum is 39.

The square root of 42855456 is about 6546.4078699696. The cubic root of 42855456 is about 349.9468109650.

The spelling of 42855456 in words is "forty-two million, eight hundred fifty-five thousand, four hundred fifty-six".