442363021 has 8 divisors (see below), whose sum is σ = 447390720. Its totient is φ = 437355072.

The previous prime is 442363003. The next prime is 442363079. The reversal of 442363021 is 120363244.

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

It is a cyclic number.

It is not a de Polignac number, because 442363021 - 2⁹ = 442362509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442363091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42676 + ... + 52018.

It is an arithmetic number, because the mean of its divisors is an integer number (55923840).

Almost surely, 2^442363021 is an apocalyptic number.

It is an amenable number.

442363021 is a deficient number, since it is larger than the sum of its proper divisors (5027699).

442363021 is a wasteful number, since it uses less digits than its factorization.

442363021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9875.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 442363021 is about 21032.4278436894. The cubic root of 442363021 is about 761.9496462571.

The spelling of 442363021 in words is "four hundred forty-two million, three hundred sixty-three thousand, twenty-one".