42844919 has 8 divisors (see below), whose sum is σ = 47732160. Its totient is φ = 38185056.

The previous prime is 42844909. The next prime is 42844937. The reversal of 42844919 is 91944824.

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

It is not a de Polignac number, because 42844919 - 2⁸ = 42844663 is a prime.

It is a super-2 number, since 2×42844919² = 3671374168233122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42844909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56447 + ... + 57200.

It is an arithmetic number, because the mean of its divisors is an integer number (5966520).

Almost surely, 2^42844919 is an apocalyptic number.

42844919 is a deficient number, since it is larger than the sum of its proper divisors (4887241).

42844919 is a wasteful number, since it uses less digits than its factorization.

42844919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113689.

The product of its digits is 82944, while the sum is 41.

The square root of 42844919 is about 6545.6030279876. The cubic root of 42844919 is about 349.9181277887.

The spelling of 42844919 in words is "forty-two million, eight hundred forty-four thousand, nine hundred nineteen".