442240245030121 has 4 divisors (see below), whose sum is σ = 449490085112644. Its totient is φ = 434990404947600.

The previous prime is 442240245030071. The next prime is 442240245030137. The reversal of 442240245030121 is 121030542042244.

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 247928800520025 + 194311444510096 = 15745755^2 + 13939564^2 .

It is a cyclic number.

It is not a de Polignac number, because 442240245030121 - 2²⁹ = 442239708159209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442240245030151) 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, 3624920041170 + ... + 3624920041291.

It is an arithmetic number, because the mean of its divisors is an integer number (112372521278161).

Almost surely, 2^{442240245030121} is an apocalyptic number.

It is an amenable number.

442240245030121 is a deficient number, since it is larger than the sum of its proper divisors (7249840082523).

442240245030121 is an equidigital number, since it uses as much as digits as its factorization.

442240245030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249840082522.

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 442240245030121 its reverse (121030542042244), we get a palindrome (563270787072365).

The spelling of 442240245030121 in words is "four hundred forty-two trillion, two hundred forty billion, two hundred forty-five million, thirty thousand, one hundred twenty-one".