440423123142 has 16 divisors (see below), whose sum is σ = 885410218800. Its totient is φ = 146047045632.

The previous prime is 440423123141. The next prime is 440423123183. The reversal of 440423123142 is 241321324044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440423123141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190164267 + ... + 190166582.

It is an arithmetic number, because the mean of its divisors is an integer number (55338138675).

Almost surely, 2^440423123142 is an apocalyptic number.

440423123142 is an abundant number, since it is smaller than the sum of its proper divisors (444987095658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440423123142 is a wasteful number, since it uses less digits than its factorization.

440423123142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380331047.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 440423123142 its reverse (241321324044), we get a palindrome (681744447186).

The spelling of 440423123142 in words is "four hundred forty billion, four hundred twenty-three million, one hundred twenty-three thousand, one hundred forty-two".