1402440323 has 4 divisors (see below), whose sum is σ = 1403724528. Its totient is φ = 1401156120.

The previous prime is 1402440317. The next prime is 1402440329. The reversal of 1402440323 is 3230442041.

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

It is an interprime number because it is at equal distance from previous prime (1402440317) and next prime (1402440329).

It is a cyclic number.

It is not a de Polignac number, because 1402440323 - 2⁴ = 1402440307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402440329) 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, 640463 + ... + 642648.

It is an arithmetic number, because the mean of its divisors is an integer number (350931132).

Almost surely, 2^1402440323 is an apocalyptic number.

1402440323 is a deficient number, since it is larger than the sum of its proper divisors (1284205).

1402440323 is a wasteful number, since it uses less digits than its factorization.

1402440323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284204.

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

The square root of 1402440323 is about 37449.1698572879. The cubic root of 1402440323 is about 1119.3385558198.

Adding to 1402440323 its reverse (3230442041), we get a palindrome (4632882364).

The spelling of 1402440323 in words is "one billion, four hundred two million, four hundred forty thousand, three hundred twenty-three".