1440042245 has 16 divisors (see below), whose sum is σ = 1743215040. Its totient is φ = 1141962624.

The previous prime is 1440042211. The next prime is 1440042251. The reversal of 1440042245 is 5422400441.

It is a cyclic number.

It is not a de Polignac number, because 1440042245 - 2⁶ = 1440042181 is a prime.

It is a congruent number.

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, 339377 + ... + 343593.

It is an arithmetic number, because the mean of its divisors is an integer number (108950940).

Almost surely, 2^1440042245 is an apocalyptic number.

It is an amenable number.

1440042245 is a deficient number, since it is larger than the sum of its proper divisors (303172795).

1440042245 is a wasteful number, since it uses less digits than its factorization.

1440042245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1440042245 is about 37947.8885446872. Note that the first 3 decimals coincide. The cubic root of 1440042245 is about 1129.2542773456.

Adding to 1440042245 its reverse (5422400441), we get a palindrome (6862442686).

The spelling of 1440042245 in words is "one billion, four hundred forty million, forty-two thousand, two hundred forty-five".