42942823 has 16 divisors (see below), whose sum is σ = 55388160. Its totient is φ = 32306400.

The previous prime is 42942821. The next prime is 42942827. The reversal of 42942823 is 32824924.

42942823 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 42942823 - 2¹ = 42942821 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 (42942821) 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 15 ways as a sum of consecutive naturals, for example, 7383 + ... + 11848.

It is an arithmetic number, because the mean of its divisors is an integer number (3461760).

Almost surely, 2^42942823 is an apocalyptic number.

42942823 is a deficient number, since it is larger than the sum of its proper divisors (12445337).

42942823 is a wasteful number, since it uses less digits than its factorization.

42942823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19278.

The product of its digits is 27648, while the sum is 34.

The square root of 42942823 is about 6553.0773686872. The cubic root of 42942823 is about 350.1844551533.

It can be divided in two parts, 4294 and 2823, that added together give a palindrome (7117).

The spelling of 42942823 in words is "forty-two million, nine hundred forty-two thousand, eight hundred twenty-three".