440431402342 has 4 divisors (see below), whose sum is σ = 660647103516. Its totient is φ = 220215701170.

The previous prime is 440431402289. The next prime is 440431402387. The reversal of 440431402342 is 243204134044.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110107850584 + ... + 110107850587.

It is an arithmetic number, because the mean of its divisors is an integer number (165161775879).

Almost surely, 2^440431402342 is an apocalyptic number.

440431402342 is a deficient number, since it is larger than the sum of its proper divisors (220215701174).

440431402342 is a wasteful number, since it uses less digits than its factorization.

440431402342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220215701173.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 440431402342 its reverse (243204134044), we get a palindrome (683635536386).

The spelling of 440431402342 in words is "four hundred forty billion, four hundred thirty-one million, four hundred two thousand, three hundred forty-two".