42943280 has 20 divisors (see below), whose sum is σ = 99843312. Its totient is φ = 17177280.

The previous prime is 42943279. The next prime is 42943297. The reversal of 42943280 is 8234924.

It is a tau number, because it is divible by the number of its divisors (20).

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 in 3 ways as a sum of consecutive naturals, for example, 268316 + ... + 268475.

Almost surely, 2^42943280 is an apocalyptic number.

42943280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42943280 is an abundant number, since it is smaller than the sum of its proper divisors (56900032).

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

42943280 is a wasteful number, since it uses less digits than its factorization.

42943280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536804 (or 536798 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 42943280 is about 6553.1122377081. The cubic root of 42943280 is about 350.1856973766.

The spelling of 42943280 in words is "forty-two million, nine hundred forty-three thousand, two hundred eighty".