1440230423 has 2 divisors, whose sum is σ = 1440230424. Its totient is φ = 1440230422.

The previous prime is 1440230417. The next prime is 1440230453. The reversal of 1440230423 is 3240320441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440230423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440230453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720115211 + 720115212.

It is an arithmetic number, because the mean of its divisors is an integer number (720115212).

Almost surely, 2^1440230423 is an apocalyptic number.

1440230423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440230423 is an equidigital number, since it uses as much as digits as its factorization.

1440230423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1440230423 is about 37950.3678901799. The cubic root of 1440230423 is about 1129.3034637628.

Adding to 1440230423 its reverse (3240320441), we get a palindrome (4680550864).

The spelling of 1440230423 in words is "one billion, four hundred forty million, two hundred thirty thousand, four hundred twenty-three".