42543976 has 8 divisors (see below), whose sum is σ = 79769970. Its totient is φ = 21271984.

The previous prime is 42543967. The next prime is 42544027. The reversal of 42543976 is 67934524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 20921476 = 4650^2 + 4574^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2658991 + ... + 2659006.

Almost surely, 2^42543976 is an apocalyptic number.

It is an amenable number.

42543976 is a deficient number, since it is larger than the sum of its proper divisors (37225994).

42543976 is a wasteful number, since it uses less digits than its factorization.

42543976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318003 (or 5317999 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 42543976 is about 6522.5743384035. The cubic root of 42543976 is about 349.0969263056.

The spelling of 42543976 in words is "forty-two million, five hundred forty-three thousand, nine hundred seventy-six".