42556822 has 16 divisors (see below), whose sum is σ = 79587072. Its totient is φ = 16580520.

The previous prime is 42556781. The next prime is 42556823. The reversal of 42556822 is 22865524.

42556822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42556822² = 3622166197479368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138018 + ... + 138325.

It is an arithmetic number, because the mean of its divisors is an integer number (4974192).

Almost surely, 2^42556822 is an apocalyptic number.

42556822 is a deficient number, since it is larger than the sum of its proper divisors (37030250).

42556822 is a wasteful number, since it uses less digits than its factorization.

42556822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276363.

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

The square root of 42556822 is about 6523.5589979704. The cubic root of 42556822 is about 349.1320589554.

The spelling of 42556822 in words is "forty-two million, five hundred fifty-six thousand, eight hundred twenty-two".