442242019 has 8 divisors (see below), whose sum is σ = 455160960. Its totient is φ = 429374016.

The previous prime is 442241977. The next prime is 442242023. The reversal of 442242019 is 910242244.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442242019 is a prime.

It is a super-2 number, since 2×442242019² = 391156006738392722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442242319) 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, 5247 + ... + 30199.

It is an arithmetic number, because the mean of its divisors is an integer number (56895120).

Almost surely, 2^442242019 is an apocalyptic number.

442242019 is a deficient number, since it is larger than the sum of its proper divisors (12918941).

442242019 is a wasteful number, since it uses less digits than its factorization.

442242019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25469.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 442242019 is about 21029.5510888844. The cubic root of 442242019 is about 761.8801664902.

The spelling of 442242019 in words is "four hundred forty-two million, two hundred forty-two thousand, nineteen".