442443642 has 8 divisors (see below), whose sum is σ = 884887296. Its totient is φ = 147481212.

The previous prime is 442443623. The next prime is 442443643. The reversal of 442443642 is 246344244.

It is a happy number.

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

442443642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (442443643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36870298 + ... + 36870309.

It is an arithmetic number, because the mean of its divisors is an integer number (110610912).

Almost surely, 2^442443642 is an apocalyptic number.

442443642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442443642 is a wasteful number, since it uses less digits than its factorization.

442443642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73740612.

The product of its digits is 73728, while the sum is 33.

The square root of 442443642 is about 21034.3443444287. The cubic root of 442443642 is about 761.9959320813.

Adding to 442443642 its reverse (246344244), we get a palindrome (688787886).

The spelling of 442443642 in words is "four hundred forty-two million, four hundred forty-three thousand, six hundred forty-two".