42822556 has 12 divisors (see below), whose sum is σ = 85645168. Its totient is φ = 18352512.

The previous prime is 42822551. The next prime is 42822557. The reversal of 42822556 is 65522824.

42822556 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42822551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764661 + ... + 764716.

Almost surely, 2^42822556 is an apocalyptic number.

It is an amenable number.

42822556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42822556 is a wasteful number, since it uses less digits than its factorization.

42822556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529388 (or 1529386 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

The square root of 42822556 is about 6543.8945590527. The cubic root of 42822556 is about 349.8572370138.

The spelling of 42822556 in words is "forty-two million, eight hundred twenty-two thousand, five hundred fifty-six".