440240042 has 32 divisors (see below), whose sum is σ = 741097728. Its totient is φ = 194400000.

The previous prime is 440240011. The next prime is 440240069. The reversal of 440240042 is 240042044.

It is a super-2 number, since 2×440240042² = 387622589160323528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 440239996 and 440240023.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243542 + ... + 245342.

It is an arithmetic number, because the mean of its divisors is an integer number (23159304).

Almost surely, 2^440240042 is an apocalyptic number.

440240042 is a deficient number, since it is larger than the sum of its proper divisors (300857686).

440240042 is a wasteful number, since it uses less digits than its factorization.

440240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 440240042 is about 20981.8979599082. The cubic root of 440240042 is about 760.7287803886.

Adding to 440240042 its reverse (240042044), we get a palindrome (680282086).

It can be divided in two parts, 4402 and 40042, that added together give a palindrome (44444).

The spelling of 440240042 in words is "four hundred forty million, two hundred forty thousand, forty-two".