442243401 has 4 divisors (see below), whose sum is σ = 589657872. Its totient is φ = 294828932.

The previous prime is 442243397. The next prime is 442243421. The reversal of 442243401 is 104342244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442243401 - 2² = 442243397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442243421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73707231 + ... + 73707236.

It is an arithmetic number, because the mean of its divisors is an integer number (147414468).

Almost surely, 2^442243401 is an apocalyptic number.

It is an amenable number.

442243401 is a deficient number, since it is larger than the sum of its proper divisors (147414471).

442243401 is a wasteful number, since it uses less digits than its factorization.

442243401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147414470.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 442243401 is about 21029.5839473823. The cubic root of 442243401 is about 761.8809601109.

Adding to 442243401 its reverse (104342244), we get a palindrome (546585645).

The spelling of 442243401 in words is "four hundred forty-two million, two hundred forty-three thousand, four hundred one".