442400001 has 4 divisors (see below), whose sum is σ = 589866672. Its totient is φ = 294933332.

The previous prime is 442399987. The next prime is 442400011. The reversal of 442400001 is 100004244.

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 442400001 - 2¹⁰ = 442398977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442400011) 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, 73733331 + ... + 73733336.

It is an arithmetic number, because the mean of its divisors is an integer number (147466668).

Almost surely, 2^442400001 is an apocalyptic number.

It is an amenable number.

442400001 is a deficient number, since it is larger than the sum of its proper divisors (147466671).

442400001 is a wasteful number, since it uses less digits than its factorization.

442400001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147466670.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 442400001 is about 21033.3069439877. The cubic root of 442400001 is about 761.9708777732.

Adding to 442400001 its reverse (100004244), we get a palindrome (542404245).

The spelling of 442400001 in words is "four hundred forty-two million, four hundred thousand, one".