42956256 has 96 divisors (see below), whose sum is σ = 130394880. Its totient is φ = 12128256.

The previous prime is 42956231. The next prime is 42956257. The reversal of 42956256 is 65265924.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42956257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64855 + ... + 65513.

It is an arithmetic number, because the mean of its divisors is an integer number (1358280).

Almost surely, 2^42956256 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 42956256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65197440).

42956256 is an abundant number, since it is smaller than the sum of its proper divisors (87438624).

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

42956256 is a wasteful number, since it uses less digits than its factorization.

42956256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 768 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 42956256 is about 6554.1022268500. The cubic root of 42956256 is about 350.2209652307.

The spelling of 42956256 in words is "forty-two million, nine hundred fifty-six thousand, two hundred fifty-six".