42556000 has 48 divisors (see below), whose sum is σ = 104569920. Its totient is φ = 17020800.

The previous prime is 42555983. The next prime is 42556001. The reversal of 42556000 is 65524.

It is a super-2 number, since 2×42556000² = 3622026272000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1320 + ... + 9319.

It is an arithmetic number, because the mean of its divisors is an integer number (2178540).

Almost surely, 2^42556000 is an apocalyptic number.

42556000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42556000 is an abundant number, since it is smaller than the sum of its proper divisors (62013920).

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

42556000 is a wasteful number, since it uses less digits than its factorization.

42556000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10664 (or 10646 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42556000 is about 6523.4959952467. The cubic root of 42556000 is about 349.1298110714.

The spelling of 42556000 in words is "forty-two million, five hundred fifty-six thousand".