442001401 has 4 divisors (see below), whose sum is σ = 442649232. Its totient is φ = 441353572.

The previous prime is 442001381. The next prime is 442001407. The reversal of 442001401 is 104100244.

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 442001401 - 2⁵ = 442001369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442001407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322891 + ... + 324256.

It is an arithmetic number, because the mean of its divisors is an integer number (110662308).

Almost surely, 2^442001401 is an apocalyptic number.

It is an amenable number.

442001401 is a deficient number, since it is larger than the sum of its proper divisors (647831).

442001401 is an equidigital number, since it uses as much as digits as its factorization.

442001401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647830.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 442001401 is about 21023.8293609894. The cubic root of 442001401 is about 761.7419651345.

Adding to 442001401 its reverse (104100244), we get a palindrome (546101645).

The spelling of 442001401 in words is "four hundred forty-two million, one thousand, four hundred one".