42744619 has 4 divisors (see below), whose sum is σ = 42764760. Its totient is φ = 42724480.

The previous prime is 42744607. The next prime is 42744641. The reversal of 42744619 is 91644724.

It is a happy number.

42744619 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 42744619 - 2⁵ = 42744587 is a prime.

It is a super-2 number, since 2×42744619² = 3654204906910322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42744019) 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, 6454 + ... + 11275.

It is an arithmetic number, because the mean of its divisors is an integer number (10691190).

Almost surely, 2^42744619 is an apocalyptic number.

42744619 is a deficient number, since it is larger than the sum of its proper divisors (20141).

42744619 is a wasteful number, since it uses less digits than its factorization.

42744619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20140.

The product of its digits is 48384, while the sum is 37.

The square root of 42744619 is about 6537.9369070067. The cubic root of 42744619 is about 349.6448615382.

The spelling of 42744619 in words is "forty-two million, seven hundred forty-four thousand, six hundred nineteen".