42884123 has 4 divisors (see below), whose sum is σ = 43427040. Its totient is φ = 42341208.

The previous prime is 42884117. The next prime is 42884131. The reversal of 42884123 is 32148824.

42884123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42884123 - 2¹⁸ = 42621979 is a prime.

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 42884123.

It is not an unprimeable number, because it can be changed into a prime (42884113) 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 3 ways as a sum of consecutive naturals, for example, 271340 + ... + 271497.

It is an arithmetic number, because the mean of its divisors is an integer number (10856760).

Almost surely, 2^42884123 is an apocalyptic number.

42884123 is a deficient number, since it is larger than the sum of its proper divisors (542917).

42884123 is an equidigital number, since it uses as much as digits as its factorization.

42884123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542916.

The product of its digits is 12288, while the sum is 32.

The square root of 42884123 is about 6548.5970253177. The cubic root of 42884123 is about 350.0248227293.

The spelling of 42884123 in words is "forty-two million, eight hundred eighty-four thousand, one hundred twenty-three".