444420240442 has 4 divisors (see below), whose sum is σ = 666630360666. Its totient is φ = 222210120220.

The previous prime is 444420240391. The next prime is 444420240503. The reversal of 444420240442 is 244042024444.

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

It can be written as a sum of positive squares in only one way, i.e., 224392637401 + 220027603041 = 473701^2 + 469071^2 .

It is a super-3 number, since 3×444420240442³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 444420240398 and 444420240407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105060109 + ... + 111105060112.

Almost surely, 2^444420240442 is an apocalyptic number.

444420240442 is a deficient number, since it is larger than the sum of its proper divisors (222210120224).

444420240442 is a wasteful number, since it uses less digits than its factorization.

444420240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222210120223.

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 444420240442 its reverse (244042024444), we get a palindrome (688462264886).

The spelling of 444420240442 in words is "four hundred forty-four billion, four hundred twenty million, two hundred forty thousand, four hundred forty-two".