440040442042 has 4 divisors (see below), whose sum is σ = 660060663066. Its totient is φ = 220020221020.

The previous prime is 440040441989. The next prime is 440040442081. The reversal of 440040442042 is 240244040044.

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., 435823108561 + 4217333481 = 660169^2 + 64941^2 .

It is a super-2 number, since 2×440040442042² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 440040442042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010110509 + ... + 110010110512.

Almost surely, 2^440040442042 is an apocalyptic number.

440040442042 is a deficient number, since it is larger than the sum of its proper divisors (220020221024).

440040442042 is a wasteful number, since it uses less digits than its factorization.

440040442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220020221023.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 440040442042 its reverse (240244040044), we get a palindrome (680284482086).

The spelling of 440040442042 in words is "four hundred forty billion, forty million, four hundred forty-two thousand, forty-two".