42818823 has 6 divisors (see below), whose sum is σ = 61849424. Its totient is φ = 28545876.

The previous prime is 42818803. The next prime is 42818827. The reversal of 42818823 is 32881824.

It is a happy number.

42818823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42818823 - 2¹² = 42814727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42818827) 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 5 ways as a sum of consecutive naturals, for example, 2378815 + ... + 2378832.

Almost surely, 2^42818823 is an apocalyptic number.

42818823 is a deficient number, since it is larger than the sum of its proper divisors (19030601).

42818823 is a wasteful number, since it uses less digits than its factorization.

42818823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757653 (or 4757650 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 42818823 is about 6543.6093251355. The cubic root of 42818823 is about 349.8470706036.

The spelling of 42818823 in words is "forty-two million, eight hundred eighteen thousand, eight hundred twenty-three".