42884819 has 4 divisors (see below), whose sum is σ = 43051944. Its totient is φ = 42717696.

The previous prime is 42884801. The next prime is 42884833. The reversal of 42884819 is 91848824.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42884819 - 2²⁰ = 41836243 is a prime.

It is a super-2 number, since 2×42884819² = 3678215401325522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42884819.

It is not an unprimeable number, because it can be changed into a prime (42884519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83177 + ... + 83690.

It is an arithmetic number, because the mean of its divisors is an integer number (10762986).

Almost surely, 2^42884819 is an apocalyptic number.

42884819 is a deficient number, since it is larger than the sum of its proper divisors (167125).

42884819 is a wasteful number, since it uses less digits than its factorization.

42884819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167124.

The product of its digits is 147456, while the sum is 44.

The square root of 42884819 is about 6548.6501662556. The cubic root of 42884819 is about 350.0267163280.

The spelling of 42884819 in words is "forty-two million, eight hundred eighty-four thousand, eight hundred nineteen".