440042530 has 16 divisors (see below), whose sum is σ = 792596664. Its totient is φ = 175901440.

The previous prime is 440042497. The next prime is 440042543. The reversal of 440042530 is 35240044.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 411237841 + 28804689 = 20279^2 + 5367^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2490 + ... + 29770.

Almost surely, 2^440042530 is an apocalyptic number.

440042530 is a deficient number, since it is larger than the sum of its proper divisors (352554134).

440042530 is a wasteful number, since it uses less digits than its factorization.

440042530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28901.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 440042530 is about 20977.1907080047. The cubic root of 440042530 is about 760.6149973579.

Adding to 440042530 its reverse (35240044), we get a palindrome (475282574).

The spelling of 440042530 in words is "four hundred forty million, forty-two thousand, five hundred thirty".