442401641 has 8 divisors (see below), whose sum is σ = 499262400. Its totient is φ = 388314640.

The previous prime is 442401629. The next prime is 442401677. The reversal of 442401641 is 146104244.

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

It is not a de Polignac number, because 442401641 - 2¹⁴ = 442385257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442401641.

It is not an unprimeable number, because it can be changed into a prime (442401601) 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, 693101 + ... + 693738.

It is an arithmetic number, because the mean of its divisors is an integer number (62407800).

Almost surely, 2^442401641 is an apocalyptic number.

It is an amenable number.

442401641 is a deficient number, since it is larger than the sum of its proper divisors (56860759).

442401641 is a wasteful number, since it uses less digits than its factorization.

442401641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386879.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 442401641 is about 21033.3459297374. The cubic root of 442401641 is about 761.9718193274.

Adding to 442401641 its reverse (146104244), we get a palindrome (588505885).

The spelling of 442401641 in words is "four hundred forty-two million, four hundred one thousand, six hundred forty-one".