1440300423 has 4 divisors (see below), whose sum is σ = 1920400568. Its totient is φ = 960200280.

The previous prime is 1440300413. The next prime is 1440300473. The reversal of 1440300423 is 3240030441.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1440300423 - 2⁶ = 1440300359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1440300423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440300403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240050068 + ... + 240050073.

It is an arithmetic number, because the mean of its divisors is an integer number (480100142).

Almost surely, 2^1440300423 is an apocalyptic number.

1440300423 is a deficient number, since it is larger than the sum of its proper divisors (480100145).

1440300423 is an equidigital number, since it uses as much as digits as its factorization.

1440300423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480100144.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1440300423 is about 37951.2901361732. The cubic root of 1440300423 is about 1129.3217594375.

Adding to 1440300423 its reverse (3240030441), we get a palindrome (4680330864).

The spelling of 1440300423 in words is "one billion, four hundred forty million, three hundred thousand, four hundred twenty-three".