1440427343 has 4 divisors (see below), whose sum is σ = 1464040968. Its totient is φ = 1416813720.

The previous prime is 1440427337. The next prime is 1440427349. The reversal of 1440427343 is 3437240441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3437240441 = 113 ⋅30418057.

It is an interprime number because it is at equal distance from previous prime (1440427337) and next prime (1440427349).

It is a cyclic number.

It is not a de Polignac number, because 1440427343 - 2⁴ = 1440427327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440427349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11806721 + ... + 11806842.

It is an arithmetic number, because the mean of its divisors is an integer number (366010242).

Almost surely, 2^1440427343 is an apocalyptic number.

1440427343 is a deficient number, since it is larger than the sum of its proper divisors (23613625).

1440427343 is an equidigital number, since it uses as much as digits as its factorization.

1440427343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23613624.

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 1440427343 is about 37952.9622427552. The cubic root of 1440427343 is about 1129.3549305976.

Adding to 1440427343 its reverse (3437240441), we get a palindrome (4877667784).

The spelling of 1440427343 in words is "one billion, four hundred forty million, four hundred twenty-seven thousand, three hundred forty-three".