42556256 has 48 divisors (see below), whose sum is σ = 88833024. Its totient is φ = 20025984.

The previous prime is 42556247. The next prime is 42556259. The reversal of 42556256 is 65265524.

It is a super-2 number, since 2×42556256² = 3622069849475072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556259) 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, 48881 + ... + 49743.

It is an arithmetic number, because the mean of its divisors is an integer number (1850688).

Almost surely, 2^42556256 is an apocalyptic number.

42556256 is a gapful number since it is divisible by the number (46) 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 42556256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44416512).

42556256 is an abundant number, since it is smaller than the sum of its proper divisors (46276768).

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

42556256 is a wasteful number, since it uses less digits than its factorization.

42556256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 955 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 42556256 is about 6523.5156165982. The cubic root of 42556256 is about 349.1305111454.

The spelling of 42556256 in words is "forty-two million, five hundred fifty-six thousand, two hundred fifty-six".