402144321111 has 16 divisors (see below), whose sum is σ = 577456473216. Its totient is φ = 247465511136.

The previous prime is 402144321079. The next prime is 402144321113. The reversal of 402144321111 is 111123441204.

It is a happy number.

It is not a de Polignac number, because 402144321111 - 2⁵ = 402144321079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144321113) 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 15 ways as a sum of consecutive naturals, for example, 1216096 + ... + 1511018.

It is an arithmetic number, because the mean of its divisors is an integer number (36091029576).

Almost surely, 2^402144321111 is an apocalyptic number.

402144321111 is a deficient number, since it is larger than the sum of its proper divisors (175312152105).

402144321111 is a wasteful number, since it uses less digits than its factorization.

402144321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329902.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 402144321111 its reverse (111123441204), we get a palindrome (513267762315).

The spelling of 402144321111 in words is "four hundred two billion, one hundred forty-four million, three hundred twenty-one thousand, one hundred eleven".