42818885 has 8 divisors (see below), whose sum is σ = 51499800. Its totient is φ = 34177024.

The previous prime is 42818873. The next prime is 42818891. The reversal of 42818885 is 58881824.

It is a happy number.

42818885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 73441 + 42745444 = 271^2 + 6538^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42818885 - 2¹⁶ = 42753349 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 7292 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (6437475).

Almost surely, 2^42818885 is an apocalyptic number.

It is an amenable number.

42818885 is a deficient number, since it is larger than the sum of its proper divisors (8680915).

42818885 is a wasteful number, since it uses less digits than its factorization.

42818885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19527.

The product of its digits is 163840, while the sum is 44.

The square root of 42818885 is about 6543.6140625804. The cubic root of 42818885 is about 349.8472394585.

The spelling of 42818885 in words is "forty-two million, eight hundred eighteen thousand, eight hundred eighty-five".