442478641 has 8 divisors (see below), whose sum is σ = 484140384. Its totient is φ = 401056320.

The previous prime is 442478639. The next prime is 442478657. The reversal of 442478641 is 146874244.

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 442478641 - 2¹ = 442478639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442478594 and 442478603.

It is not an unprimeable number, because it can be changed into a prime (442478681) 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, 55975 + ... + 63388.

It is an arithmetic number, because the mean of its divisors is an integer number (60517548).

Almost surely, 2^442478641 is an apocalyptic number.

It is an amenable number.

442478641 is a deficient number, since it is larger than the sum of its proper divisors (41661743).

442478641 is a wasteful number, since it uses less digits than its factorization.

442478641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119711.

The product of its digits is 172032, while the sum is 40.

The square root of 442478641 is about 21035.1762768939. The cubic root of 442478641 is about 762.0160238247.

The spelling of 442478641 in words is "four hundred forty-two million, four hundred seventy-eight thousand, six hundred forty-one".