442144001 has 4 divisors (see below), whose sum is σ = 476155092. Its totient is φ = 408132912.

The previous prime is 442143997. The next prime is 442144033. The reversal of 442144001 is 100441244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57395776 + 384748225 = 7576^2 + 19615^2 .

It is a cyclic number.

It is not a de Polignac number, because 442144001 - 2² = 442143997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442144081) 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, 17005526 + ... + 17005551.

It is an arithmetic number, because the mean of its divisors is an integer number (119038773).

Almost surely, 2^442144001 is an apocalyptic number.

It is an amenable number.

442144001 is a deficient number, since it is larger than the sum of its proper divisors (34011091).

442144001 is a wasteful number, since it uses less digits than its factorization.

442144001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34011090.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 442144001 is about 21027.2204772766. The cubic root of 442144001 is about 761.8238749237.

Adding to 442144001 its reverse (100441244), we get a palindrome (542585245).

The spelling of 442144001 in words is "four hundred forty-two million, one hundred forty-four thousand, one".