1440120403 has 2 divisors, whose sum is σ = 1440120404. Its totient is φ = 1440120402.

The previous prime is 1440120379. The next prime is 1440120431. The reversal of 1440120403 is 3040210441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440120403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440120443) 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 as a sum of consecutive naturals, namely, 720060201 + 720060202.

It is an arithmetic number, because the mean of its divisors is an integer number (720060202).

Almost surely, 2^1440120403 is an apocalyptic number.

1440120403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440120403 is an equidigital number, since it uses as much as digits as its factorization.

1440120403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1440120403 is about 37948.9183376812. The cubic root of 1440120403 is about 1129.2747069915.

Adding to 1440120403 its reverse (3040210441), we get a palindrome (4480330844).

The spelling of 1440120403 in words is "one billion, four hundred forty million, one hundred twenty thousand, four hundred three".