42044019 has 4 divisors (see below), whose sum is σ = 56058696. Its totient is φ = 28029344.

The previous prime is 42043993. The next prime is 42044047. The reversal of 42044019 is 91044024.

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 42044019 - 2⁸ = 42043763 is a prime.

It is a super-2 number, since 2×42044019² = 3535399067344722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42044019.

It is not an unprimeable number, because it can be changed into a prime (42044059) 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 3 ways as a sum of consecutive naturals, for example, 7007334 + ... + 7007339.

It is an arithmetic number, because the mean of its divisors is an integer number (14014674).

Almost surely, 2^42044019 is an apocalyptic number.

42044019 is a deficient number, since it is larger than the sum of its proper divisors (14014677).

42044019 is a wasteful number, since it uses less digits than its factorization.

42044019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14014676.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 42044019 is about 6484.1359486056. The cubic root of 42044019 is about 347.7240595620.

The spelling of 42044019 in words is "forty-two million, forty-four thousand, nineteen".