1440402103 has 16 divisors (see below), whose sum is σ = 1737400320. Its totient is φ = 1166554656.

The previous prime is 1440402097. The next prime is 1440402109. The reversal of 1440402103 is 3012040441.

It is an interprime number because it is at equal distance from previous prime (1440402097) and next prime (1440402109).

It is a cyclic number.

It is not a de Polignac number, because 1440402103 - 2⁹ = 1440401591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440402109) 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 15 ways as a sum of consecutive naturals, for example, 36801 + ... + 65077.

It is an arithmetic number, because the mean of its divisors is an integer number (108587520).

Almost surely, 2^1440402103 is an apocalyptic number.

1440402103 is a deficient number, since it is larger than the sum of its proper divisors (296998217).

1440402103 is a wasteful number, since it uses less digits than its factorization.

1440402103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28686.

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

The square root of 1440402103 is about 37952.6297244341. The cubic root of 1440402103 is about 1129.3483341559.

Adding to 1440402103 its reverse (3012040441), we get a palindrome (4452442544).

The spelling of 1440402103 in words is "one billion, four hundred forty million, four hundred two thousand, one hundred three".