402144420343 has 4 divisors (see below), whose sum is σ = 402404037400. Its totient is φ = 401884803288.

The previous prime is 402144420319. The next prime is 402144420401. The reversal of 402144420343 is 343024441204.

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

It is a cyclic number.

It is not a de Polignac number, because 402144420343 - 2⁵ = 402144420311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144424343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129806205 + ... + 129809302.

It is an arithmetic number, because the mean of its divisors is an integer number (100601009350).

Almost surely, 2^402144420343 is an apocalyptic number.

402144420343 is a deficient number, since it is larger than the sum of its proper divisors (259617057).

402144420343 is a wasteful number, since it uses less digits than its factorization.

402144420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259617056.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 402144420343 its reverse (343024441204), we get a palindrome (745168861547).

The spelling of 402144420343 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty thousand, three hundred forty-three".