42543966 has 16 divisors (see below), whose sum is σ = 87833088. Its totient is φ = 13723800.

The previous prime is 42543961. The next prime is 42543967. The reversal of 42543966 is 66934524.

42543966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42543961) 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, 114180 + ... + 114551.

It is an arithmetic number, because the mean of its divisors is an integer number (5489568).

Almost surely, 2^42543966 is an apocalyptic number.

42543966 is an abundant number, since it is smaller than the sum of its proper divisors (45289122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42543966 is a wasteful number, since it uses less digits than its factorization.

42543966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228767.

The product of its digits is 155520, while the sum is 39.

The square root of 42543966 is about 6522.5735718350. The cubic root of 42543966 is about 349.0968989537.

The spelling of 42543966 in words is "forty-two million, five hundred forty-three thousand, nine hundred sixty-six".