440145042 has 16 divisors (see below), whose sum is σ = 881658432. Its totient is φ = 146486960.

The previous prime is 440145031. The next prime is 440145047. The reversal of 440145042 is 240541044.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (440145047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52809 + ... + 60572.

It is an arithmetic number, because the mean of its divisors is an integer number (55103652).

Almost surely, 2^440145042 is an apocalyptic number.

440145042 is an abundant number, since it is smaller than the sum of its proper divisors (441513390).

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

440145042 is a wasteful number, since it uses less digits than its factorization.

440145042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114033.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 440145042 is about 20979.6339815546. The cubic root of 440145042 is about 760.6740568846.

Adding to 440145042 its reverse (240541044), we get a palindrome (680686086).

The spelling of 440145042 in words is "four hundred forty million, one hundred forty-five thousand, forty-two".