440242421234 has 128 divisors (see below), whose sum is σ = 869083706880. Its totient is φ = 162238003200.

The previous prime is 440242421233. The next prime is 440242421257. The reversal of 440242421234 is 432124242044.

It is a self number, because there is not a number n which added to its sum of digits gives 440242421234.

It is not an unprimeable number, because it can be changed into a prime (440242421233) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251135702 + ... + 251137454.

It is an arithmetic number, because the mean of its divisors is an integer number (6789716460).

Almost surely, 2^440242421234 is an apocalyptic number.

440242421234 is a deficient number, since it is larger than the sum of its proper divisors (428841285646).

440242421234 is a wasteful number, since it uses less digits than its factorization.

440242421234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 440242421234 its reverse (432124242044), we get a palindrome (872366663278).

The spelling of 440242421234 in words is "four hundred forty billion, two hundred forty-two million, four hundred twenty-one thousand, two hundred thirty-four".