440243042 has 16 divisors (see below), whose sum is σ = 670643064. Its totient is φ = 216720000.

The previous prime is 440243009. The next prime is 440243077. The reversal of 440243042 is 240342044.

It can be written as a sum of positive squares in 4 ways, for example, as 382163401 + 58079641 = 19549^2 + 7621^2 .

It is a junction number, because it is equal to n+sod(n) for n = 440242999 and 440243017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30542 + ... + 42582.

Almost surely, 2^440243042 is an apocalyptic number.

440243042 is a deficient number, since it is larger than the sum of its proper divisors (230400022).

440243042 is a wasteful number, since it uses less digits than its factorization.

440243042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12325.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 440243042 is about 20981.9694499825. The cubic root of 440243042 is about 760.7305083710.

Adding to 440243042 its reverse (240342044), we get a palindrome (680585086).

The spelling of 440243042 in words is "four hundred forty million, two hundred forty-three thousand, forty-two".