42543219 has 8 divisors (see below), whose sum is σ = 56754432. Its totient is φ = 28347080.

The previous prime is 42543187. The next prime is 42543269. The reversal of 42543219 is 91234524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42543219 - 2⁵ = 42543187 is a prime.

It is a super-2 number, since 2×42543219² = 3619850965763922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42543269) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9082 + ... + 12944.

It is an arithmetic number, because the mean of its divisors is an integer number (7094304).

Almost surely, 2^42543219 is an apocalyptic number.

42543219 is a deficient number, since it is larger than the sum of its proper divisors (14211213).

42543219 is a wasteful number, since it uses less digits than its factorization.

42543219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537.

The product of its digits is 8640, while the sum is 30.

The square root of 42543219 is about 6522.5163089102. The cubic root of 42543219 is about 349.0948557583.

The spelling of 42543219 in words is "forty-two million, five hundred forty-three thousand, two hundred nineteen".