402144403 has 2 divisors, whose sum is σ = 402144404. Its totient is φ = 402144402.

The previous prime is 402144389. The next prime is 402144427. The reversal of 402144403 is 304441204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402144403 is a prime.

It is not a weakly prime, because it can be changed into another prime (402144433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072201 + 201072202.

It is an arithmetic number, because the mean of its divisors is an integer number (201072202).

Almost surely, 2^402144403 is an apocalyptic number.

402144403 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144403 is an equidigital number, since it uses as much as digits as its factorization.

402144403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 402144403 is about 20053.5384159504. The cubic root of 402144403 is about 738.1206285095.

Adding to 402144403 its reverse (304441204), we get a palindrome (706585607).

The spelling of 402144403 in words is "four hundred two million, one hundred forty-four thousand, four hundred three".