442440201 has 32 divisors (see below), whose sum is σ = 693941248.
Its totient is φ = 245488320.
The previous prime is 442440179. The next prime is 442440209. The reversal of 442440201 is 102044244.
Adding to 442440201 its reverse (102044244), we get a palindrome (544484445).
It is not a de Polignac number, because 442440201 - 25 = 442440169 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is not an unprimeable number, because it can be changed into a prime (442440209) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162090 + ... + 164796.
It is an arithmetic number, because the mean of its divisors is an integer number (21685664).
Almost surely, 2442440201 is an apocalyptic number.
It is an amenable number.
442440201 is a deficient number, since it is larger than the sum of its proper divisors (251501047).
442440201 is a wasteful number, since it uses less digits than its factorization.
442440201 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2941.
The product of its (nonzero) digits is 1024, while the sum is 21.
The square root of 442440201 is about 21034.2625494691.
The cubic root of 442440201 is about 761.9939566622.
The spelling of 442440201 in words is "four hundred forty-two million, four hundred forty thousand, two hundred one".