42944419 has 4 divisors (see below), whose sum is σ = 49079344. Its totient is φ = 36809496.

The previous prime is 42944413. The next prime is 42944437. The reversal of 42944419 is 91444924.

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 42944419 - 2¹⁵ = 42911651 is a prime.

It is a super-2 number, since 2×42944419² = 3688446246495122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42944413) 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, 3067452 + ... + 3067465.

It is an arithmetic number, because the mean of its divisors is an integer number (12269836).

Almost surely, 2^42944419 is an apocalyptic number.

42944419 is a deficient number, since it is larger than the sum of its proper divisors (6134925).

42944419 is an equidigital number, since it uses as much as digits as its factorization.

42944419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134924.

The product of its digits is 41472, while the sum is 37.

The square root of 42944419 is about 6553.1991424037. The cubic root of 42944419 is about 350.1887933828.

The spelling of 42944419 in words is "forty-two million, nine hundred forty-four thousand, four hundred nineteen".