42055056 has 90 divisors (see below), whose sum is σ = 124369830. Its totient is φ = 13264128.

The previous prime is 42055033. The next prime is 42055099. The reversal of 42055056 is 65055024.

It can be written as a sum of positive squares in only one way, i.e., 40755456 + 1299600 = 6384^2 + 1140^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51580 + ... + 52388.

It is an arithmetic number, because the mean of its divisors is an integer number (1381887).

Almost surely, 2^42055056 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 42055056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62184915).

42055056 is an abundant number, since it is smaller than the sum of its proper divisors (82314774).

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

42055056 is a wasteful number, since it uses less digits than its factorization.

42055056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 42055056 is about 6484.9869699175. The cubic root of 42055056 is about 347.7544839819.

It can be divided in two parts, 4205 and 5056, that added together give a cube (9261 = 21³).

The spelling of 42055056 in words is "forty-two million, fifty-five thousand, fifty-six".