42822561 has 8 divisors (see below), whose sum is σ = 60101920. Its totient is φ = 27045792.

The previous prime is 42822557. The next prime is 42822587. The reversal of 42822561 is 16522824.

42822561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42822561 - 2² = 42822557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42822511) 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, 375580 + ... + 375693.

It is an arithmetic number, because the mean of its divisors is an integer number (7512740).

Almost surely, 2^42822561 is an apocalyptic number.

It is an amenable number.

42822561 is a deficient number, since it is larger than the sum of its proper divisors (17279359).

42822561 is a wasteful number, since it uses less digits than its factorization.

42822561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751295.

The product of its digits is 7680, while the sum is 30.

The square root of 42822561 is about 6543.8949410882. The cubic root of 42822561 is about 349.8572506304.

The spelling of 42822561 in words is "forty-two million, eight hundred twenty-two thousand, five hundred sixty-one".